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Tytuł:
AN ANALYSIS OF RAMADAN EFFECT BY GJR-GARCH MODEL: CASE OF BORSA ISTANBUL
Autorzy:
Akbalik, Murat
Tunay, K. Batu
Powiązania:
https://bibliotekanauki.pl/articles/489121.pdf
Data publikacji:
2016
Wydawca:
Instytut Badań Gospodarczych
Tematy:
stock returns
anomalies
Ramadan effect
GJR-GARCH
Opis:
Although there are a lot of studies testing the calendar effect in BIST, there are limited numbers of studies testing the Ramadan effect. In this study, the period of 05 August 1997–24 October 2014 is tested by the GJR-GARCH(1,1) model on the basis of BIST 30, 100, all, second national, sectors and sub-sectors. In some of the models, the dummy variable of Ramadan did not have significant coefficients. In the models that provide significant value of the dummy variable of Ramadan, coefficients of this variable are negative. This shows that, in the Ramadan, return rates of the second national index, chemistry, and manifacturing, textile, trust companies sectors are affected negatively. Any significant result could not be found whether Ramadan has effect upon other sector indices. Findings are in the direction that even if the month of Ramadan generally doesn’t increase the average return, it makes a positive impact on the market by reducing the volatility of returns.
Źródło:
Oeconomia Copernicana; 2016, 7, 4; 593-612
2083-1277
Pojawia się w:
Oeconomia Copernicana
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Trading volume and volatility of stock returns: Evidence from some European and Asian stock markets
Autorzy:
Chocholatá, Michaela
Powiązania:
https://bibliotekanauki.pl/articles/453499.pdf
Data publikacji:
2011
Wydawca:
Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Katedra Ekonometrii i Statystyki
Tematy:
volatility
TGARCH model
trading volume
stock returns
Opis:
This paper analyses the relationship between the daily volatility of stock returns and the trading volume using the TGARCH models for selected European and Asian stock markets. The leverage effect has been proved in all analysed cases. The logarithm of the trading volume was included into the conditional volatility equation as a proxy for information arrival time. Although in case of all analysed Asian stock returns the inclusion of the trading volume led to the moderate decline of the conditional volatility persistence, the results in case of European stock returns were not so unambiguous.
Źródło:
Metody Ilościowe w Badaniach Ekonomicznych; 2011, 12, 1; 27-36
2082-792X
Pojawia się w:
Metody Ilościowe w Badaniach Ekonomicznych
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Comovements of stock markets in Visegrad countries in years 2004-2017
Autorzy:
Grabowski, Wojciech
Powiązania:
https://bibliotekanauki.pl/articles/580717.pdf
Data publikacji:
2018
Wydawca:
Wydawnictwo Uniwersytetu Ekonomicznego we Wrocławiu
Tematy:
stock returns
comovements
VEC-GARCH-BEKK model
contagion
Opis:
In this paper comovements of stock markets in the Visegrad countries in years 2004-2017 are analysed. Parameters of the VEC-GARCH-BEKK model are estimated. Results of the empirical study indicate that stock returns in Poland, the Czech Republic and Hungary were sensitive to stock returns of DAX. Moreover, investors analysed performance of stock markets in the whole group of Visegrad countries, when deciding to buy or sell stocks from one market (in Warsaw, Prague or Budapest). Results of the analysis of the shocks’ transmission mechanism and the volatility transmission mechanism indicate that especially shocks coming from the German stock market strongly affected volatilities of the rates of return in the Visegrad countries.
Źródło:
Prace Naukowe Uniwersytetu Ekonomicznego we Wrocławiu; 2018, 519; 88-98
1899-3192
Pojawia się w:
Prace Naukowe Uniwersytetu Ekonomicznego we Wrocławiu
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Nvidias Stock Returns Prediction Using Machine Learning Techniques for Time Series Forecasting Problem
Autorzy:
Chlebus, Marcin
Dyczko, Michał
Woźniak, Michał
Powiązania:
https://bibliotekanauki.pl/articles/1356517.pdf
Data publikacji:
2021-01-29
Wydawca:
Uniwersytet Warszawski. Wydział Nauk Ekonomicznych
Tematy:
machine learning
nvidia
stock returns
technical analysis
fundamental analysis
Opis:
Statistical learning models have profoundly changed the rules of trading on the stock exchange. Quantitative analysts try to utilise them predict potential profits and risks in a better manner. However, the available studies are mostly focused on testing the increasingly complex machine learning models on a selected sample of stocks, indexes etc. without a thorough understanding and consideration of their economic environment. Therefore, the goal of the article is to create an effective forecasting machine learning model of daily stock returns for a preselected company characterised by a wide portfolio of strategic branches influencing its valuation. We use Nvidia Corporation stock covering the period from 07/2012 to 12/2018 and apply various econometric and machine learning models, considering a diverse group of exogenous features, to analyse the research problem. The results suggest that it is possible to develop predictive machine learning models of Nvidia stock returns (based on many independent environmental variables) which outperform both simple naïve and econometric models. Our contribution to literature is twofold. First, we provide an added value to the strand of literature on the choice of model class to the stock returns prediction problem. Second, our study contributes to the thread of selecting exogenous variables and the need for their stationarity in the case of time series models.
Źródło:
Central European Economic Journal; 2021, 8, 55; 44 - 62
2543-6821
Pojawia się w:
Central European Economic Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The impact of estimation methods and data frequency on the results of long memory assessment
Autorzy:
Brania, K.
Gurgul, H.
Powiązania:
https://bibliotekanauki.pl/articles/108396.pdf
Data publikacji:
2015
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
stock returns
volatility
trading volume
Hurst exponent
long memory
Opis:
The main goal of this paper is to examine the effects of selected methods of estimation (the Geweke and Porter-Hudak, modified Geweke and Porter-Hudak, Whittle, R/S Rescaled Range Statistic, aggregated variance, aggregated absolute value, and Peng’s variance of residuals methods) and data frequency on properties of Hurst exponents for stock returns, volatility, and trading volumes of 43 companies and eight stock market indices. The calculations have been performed for a time series of log-returns, squared log-returns, and log-volume (based on hourly and daily data) by nine methods. Descriptive statistics and distribution laws of Hurst exponents depend on the method of estimation and, to some extent, on data frequency (daily and hourly). While by and large in log-returns no long memory has been detected, some estimation methods confirm the existence of long memory in squared log-returns. All of the applied estimation methods show long memory in log-volume data.
Źródło:
Managerial Economics; 2015, 16, 1; 7-37
1898-1143
Pojawia się w:
Managerial Economics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Relations Between Momentum, Value Size, And Liquidity Factors And Stock Returns On The Polish Market
Autorzy:
Zaremba, Adam
Konieczka, Przemysław
Powiązania:
https://bibliotekanauki.pl/articles/955318.pdf
Data publikacji:
2014
Wydawca:
Uniwersytet w Białymstoku. Wydawnictwo Uniwersytetu w Białymstoku
Tematy:
value
size
momentum
cross-section of stock returns
Polish market
Warsaw Stock Exchange
Opis:
The paper examines the relations between selected company characteristics and common stock returns. In the paper, we concentrate on four well-recognized fundamental factors determining stock returns: momentum, value, size and liquidity. First, we review the existing literature in the field. Second, we investigate the relationship between fundamental factors and stock returns on the Polish market. Our computations are based on all companies on the Warsaw Stock Exchange listed in the period 2000-12. Our research provides fresh out-of-sample evidence for momentum, value, size and liquidity premium from the Polish market.
Źródło:
Optimum. Economic Studies; 2014, 5(71); 188-197
1506-7637
Pojawia się w:
Optimum. Economic Studies
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
EU banks after the crisis: sinners in the hands of angry markets
Autorzy:
Serrano, Antonio Sánchez
Powiązania:
https://bibliotekanauki.pl/articles/565728.pdf
Data publikacji:
2018
Wydawca:
Uniwersytet Warszawski. Wydawnictwo Naukowe Wydziału Zarządzania
Tematy:
European banks
stock returns
asset quality
profi tability
global financial crisis
Opis:
European Union banks were severely hit by the global fi nancial crisis in 2008 and their stock prices and returns have generally not recovered since then, differently to what has been observed in other sectors (i.e., non-fi nancial corporations) and jurisdictions (i.e., US). In this paper, we focus on three episodes of fi nancial turmoil in EU fi nancial markets occurring after the global fi nancial crisis (August 2015, December 2015 and January 2016, and June 2016) and, through a series of linear regressions, with and without control variables, attempt to determine the common features of those banks which stock returns declined the most. Results of the regressions tend to suggest that size has been driving the decreases in stock returns in the three episodes. Regarding asset quality, the Texas ratio has been a decisive factor in the evolution of stock returns of EU banks in the second and third periods. Interestingly, profi tability variables seem not to be statistically signifi cant to explain the declines in stock returns, except in the third period, but only under some specifi cations. An evolution on the perception by fi nancial market participants on EU banks, with a larger importance on asset quality in the latter periods, can also be observed. Lastly, on the basis of these results, further policy actions would be needed to clean-up the balance sheet of banks, as a necessary step towards full recovery after the global fi nancial crisis.
Źródło:
Journal of Banking and Financial Economics; 2018, 1(9); 24-51
2353-6845
Pojawia się w:
Journal of Banking and Financial Economics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Properties of returns and variance and the implications for time series modelling: Evidence from South Africa
Autorzy:
Szczygielski, Jan Jakub
Chipeta, Chimwemwe
Powiązania:
https://bibliotekanauki.pl/articles/23942749.pdf
Data publikacji:
2023-08-11
Wydawca:
Fundacja Naukowa Instytut Współczesnych Finansów
Tematy:
Johannesburg Stock Exchange
leverage effect
stock market returns
variance
Opis:
This paper investigates the properties of South African stock returns and the underlying variance. The investigation into the properties of stock returns and the behaviour of the variance underlying returns is undertaken using model-free approaches and through the application of ARCH/GARCH models. The results indicate that, as with other stock markets, returns on the South African stock market depart from normality and that variance displays evidence of heteroscedasticity, long memory, persistence, and asymmetry. Applying the EGARCH(p,q,m) and IGARCH(p,q) specifications confirms these findings and the application of these models suggests differing characteristics for variance structures underlying the South African stock market. In light of the findings relating to the properties of stock returns and the characteristics of variance and its structure, implications are outlined, and recommendations on how time-series specifications may be estimated are made.
Źródło:
Modern Finance; 2023, 1, 1; 35-55
2956-7742
Pojawia się w:
Modern Finance
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Influence of macroeconomic factors on the financial market
Autorzy:
Zelga, Kamila
Powiązania:
https://bibliotekanauki.pl/articles/1179448.pdf
Data publikacji:
2017
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
GPD
financial market
indicator
industrial production
inflation
macroeconomics factors
stock returns
unemployment rate
Opis:
Macroeconomic factors affect the economy of each country. The most influential factors are GDP, unemployment rate (positively correlated) and inflation (negatively correlated). Macroeconomic policy through their instruments affects the whole economy the country, so also the business.
Źródło:
World Scientific News; 2017, 78; 164-169
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Exchange market pressure, stock prices, and commodity prices east of the Euro
Autorzy:
Hegerty, Scott W.
Powiązania:
https://bibliotekanauki.pl/articles/522403.pdf
Data publikacji:
2018
Wydawca:
Uniwersytet Ekonomiczny w Katowicach
Tematy:
Central and Eastern Europe
Commodity prices
Exchange market pressure
Stock returns
Time series
Opis:
Aim/purpose – This paper aims to examine connections between the exchange, equity, commodity and commodity markets of a set of Central and Eastern European (CEE) economies using monthly time-series data. In particular, we examine whether stock – or commodity – price changes might put pressure on these currencies to depreciate, and whether these pressures are transmitted within the region or from larger neighbors. Design/methodology/approach – This paper creates monthly indices of Ex-change Market Pressure (EMP) from 1998 to 2017 using a combination of currency depreciation, reserve losses, and changes in interest-rate differentials for the Czech Republic, Hungary, Poland, and Ukraine, Bulgaria, and Romania. After examining these indices for evidence of currency ‘crises’, and their components for evidence of changes in currency policy, Vector Autoregressive (VAR) methods such as Granger causality and impulse-response functions are used to examine connections between EMP, domestic and foreign stock returns, and changes in commodity prices in the first four countries listed. Findings – While EMP increased in 2008, and the degree of central banks’ currency- -market interventions decreased afterward, this paper uncovers key differences among countries. In particular, the Czech Republic is relatively insulated from international transmissions, while Hungary is more susceptible to global spillovers and Poland is exposed to events originating elsewhere in the CEE region. Ukraine shows bidirectional causality between its EMP and stock indices, and finds that pressure on the hryvnia increases if commodity or oil prices decline. Research implications/limitations – This study adds to the relatively limited literature regarding this region, and highlights particular vulnerabilities for both individual countries and specific neighbors; further research is necessary to uncover the channels of transmission using economic modeling. Originality/value/contribution – This study explicitly models two major economic processes in a part of the world that is relatively rarely examined. These include events in Central and Eastern European exchange markets and central bank intervention, and also interlinkages among regional currency and equity markets, foreign equity markets, and global commodity prices. This will allow policymakers to assess integration between these countries, the rest of the European Union, and the global economy.
Źródło:
Journal of Economics and Management; 2018, 31; 74-94
1732-1948
Pojawia się w:
Journal of Economics and Management
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Economic Growth, Corporate Earnings and Equity Returns: Evidence from Central and Eastern European Countries
Autorzy:
Gajdka, Jerzy
Pietraszewski, Piotr
Powiązania:
https://bibliotekanauki.pl/articles/633149.pdf
Data publikacji:
2016-09-01
Wydawca:
Uniwersytet Łódzki. Wydawnictwo Uniwersytetu Łódzkiego
Tematy:
economic growth
stock returns
earning per share
P/E ratio
Central and Eastern European countries
Opis:
This paper discusses the links between economic growth, corporate earnings and stock returns. Cross-country correlation studies do not confirm the intuitive assumption that higher returns on equities are more likely in the faster-growing countries. The problem can be analysed more deeply by analysing stock returns with respect to the growth of earnings per share (EPS) and changes in valuation (P/E ratio). Within this framework, two types of factors explaining the lack of correlation between GDP growth and stock returns are distinguished. The empirical research on developed and emerging market countries reveals that in the long run stock price returns are driven by companies’ earnings, and that the lack of correlation between GDP growth and equity returns is almost fully explained by the divergence between GDP growth and EPS growth. In this article the results of an investigation into this area, based on a sample of post-communist Central and Eastern European countries, are presented and discussed. It was found that in these countries changes in valuation (P/E ratio) appear to play an important role, cancelling the impact of EPS growth on stock returns.
Źródło:
Comparative Economic Research. Central and Eastern Europe; 2016, 19, 3; 93-111
1508-2008
2082-6737
Pojawia się w:
Comparative Economic Research. Central and Eastern Europe
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Nastrój inwestorów i stopy zwrotu WIG
Autorzy:
Sekuła, Paweł
Powiązania:
https://bibliotekanauki.pl/articles/609969.pdf
Data publikacji:
2017
Wydawca:
Uniwersytet Marii Curie-Skłodowskiej. Wydawnictwo Uniwersytetu Marii Curie-Skłodowskiej
Tematy:
investor sentiment
stock returns
Granger causality
nastrój inwestorów
stopa zwrotu z akcji
przyczynowość w sensie Grangera
Opis:
The article presents the analysis of the relations between the investor sentiment and the WIG returns on the weekly and monthly data in the period of 2011–2016. The study shows a positive, statistically significant relationship between the WIG changes and the investor sentiment index. The results obtained indicate that the WIG is the dominant variable, and the investor sentiment index depends on the WIG changes. Moreover, the Granger causality test suggests that the investor sentiment index is not the Granger cause for the WIG.
W artykule przedstawiono analizę zależności pomiędzy nastrojami inwestorów a stopą zwrotu WIG, na podstawie danych tygodniowych i miesięcznych, w okresie 2011–2016. Badania wykazują dodatni, statystycznie istotny związek między zmianami WIG a indeksem nastrojów inwestorów. Uzyskane wyniki wskazują, że WIG jest dominującą zmienną, a indeks nastrojów inwestorów zależy od zmian WIG. Test przyczynowości Grangera sugeruje ponadto, że indeks nastrojów inwestorów nie jest przyczyną w sensie Grangera dla WIG.
Źródło:
Annales Universitatis Mariae Curie-Skłodowska, sectio H – Oeconomia; 2017, 51, 5
0459-9586
Pojawia się w:
Annales Universitatis Mariae Curie-Skłodowska, sectio H – Oeconomia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Paper profits from value, size and momentum: evidence from the Polish market
Autorzy:
Zaremba, Adam
Konieczka, Przemysław
Powiązania:
https://bibliotekanauki.pl/articles/599578.pdf
Data publikacji:
2015
Wydawca:
Wyższa Szkoła Informatyki i Zarządzania z siedzibą w Rzeszowie
Tematy:
value premium
size premium
momentum effect
cross-section of stock returns liquidity
transaction costs
Warsaw Stock Exchange
WSE
Polish stock market
Opis:
In this paper we investigate sources and characteristics of value, size and momentum profits on the Polish stock market. The research aims to broaden the academic knowledge in a few ways. First, we deliver fresh out-of-sample evidence on value, momentum, and size premiums. Second, we analyzemthe interdependences among the factors. Third, we investigate whether the factor premiums are present after accounting for liquidity constraints. Fourth, we check whether the factor premiums are robust to transaction costs. Our research is based on all the stocks listed on the WSE in years 2001-2013. We find, that the value, momentum, and size premiums are to some extent present on the Polish market. Furthermore, they strengthen each other, but they disappear after accounting for transaction costs and liquidity.
Źródło:
Finansowy Kwartalnik Internetowy e-Finanse; 2015, 11, 3; 58-69
1734-039X
Pojawia się w:
Finansowy Kwartalnik Internetowy e-Finanse
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Comparison of the Tails of Market Return Distributions
Autorzy:
Koronkiewicz, Grzegorz
Jamróz, Paweł
Powiązania:
https://bibliotekanauki.pl/articles/429869.pdf
Data publikacji:
2014
Wydawca:
Uniwersytet w Białymstoku. Wydawnictwo Uniwersytetu w Białymstoku
Tematy:
Stock-market returns
fat tails
Extreme Value Theory
Generalized Pareto Distribution
Opis:
The aim of this study is to analyze the tails of the distributions of stock market returns and to compare the differences between them. It is a well-established fact that the vast majority of stock market return distributions exhibit fat tails (a bigger probability of extreme outcomes then in the case of the normal probability). Apart from that, there seems to be a popular opinion that most market returns are negatively skewed with a fatter left tail. The study utilizes two methods for comparing the tails of a distribution. A simple approached based on the sample kurtosis, with a modification that allows for the calculation of kurtosis separately for the right and the left tail of a single distribution and a more complex approach based on the maximum likelihood fitting of the Generalized Pareto Distribution to both tales of standardized return distributions. The second approach is based on the assumptions of the Extreme Value Theory (EVT) and the Pickands-Balkema-de Haan theorem. Both approaches provide similar conclusions. Results suggest that whether the left or the right tail of the return distribution is bigger varies from market to market. All four major equity indices of the Polish Warsaw Stock Exchange exhibited a fatter left tale. However, in the whole sample it was actually more common for the right tail to be heavier, with 12 indices out of 20 exhibiting a fatter right tail then the left. The sample kurtosis indicated that all stock market return’s distributions were heavy tailed, whereas the estimates of Generalized Pareto Distribution parameters did indicate standard or thin tails in two cases. Statistical tests indicate that the differences between the tails of stock market distributions are not statistically significant
Źródło:
Optimum. Economic Studies; 2014, 5(71)
1506-7637
Pojawia się w:
Optimum. Economic Studies
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The structure of contemporaneous price-volume relationships in financial markets
Struktura zależności równoczesnych cena - wielkość obrotów na rynkach finansowych
Autorzy:
Gurgul, H.
Syrek, R.
Powiązania:
https://bibliotekanauki.pl/articles/1201254.pdf
Data publikacji:
2013
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
stock returns
volatility
trading volume
long memory
copulas
stopy zwrotu
zmienność stóp zwrotu
wielkość obrotów
długa pamięć
kopule
Opis:
The main goal of this paper is an examination of the interdependence stuctures of stock returns, volatility and trading volumes of companies listed on the CAC40 and FTSE100. The authors establish that the mean values of respective measures are different on the markets under study. In general, they are larger for equities from CAC40 than from FTSE100. The Mixture of Distributions Hypothesis with long memory is rejected for about 70 % of stocks from both markets. Additionally fractional cointegration was tested. The lack of fractional cointegration, suggests a rejection of the last variant of MDH in all cases, i.e. the time series under study do not exhibit common long-run dependence. The analyzed time series are not driven by a common information arrival process with long memory. Correlation between volatility and trading volume is present for all the stocks of companies from these markets. The mixtures of rotated copulas and Kendall correlation coefficient allowed the checking of extreme return-volume dependence structures. The empirical results reflect significant dependencies between high volatility and high trading volume. In general, the dependence structures of stock returns and trading volume are different. In the case of CAC40 companies high trading volume is not correlated as frequently with high stock returns as with low stock returns. For companies listed on the FTSE100 high stock returns are mostly related with high trading volume.
Głównym celem artykułu jest znalezienie zależności pomiędzy stopami zwrotu, ich zmiennością oraz wielkością obrotów dla spółek należących do indeksów CAC40 i FTSE100. Autorzy ustalili, że średnie miary zależności na obu badanych rynkach różnią się istotnie. Przeważnie są one większe w przypadku spółek notowanych w indeksie CAC40 aniżeli w przypadku spółek z indeksu FTSE100. Badania empiryczne dają podstawę do odrzucenia ok. 70% akcji z obu rynków hipotezy o mieszance rozkładów (MDH) w przypadku dla wszystkich szeregów czasowych w wersji z długą pamięcią. Dodatkowo przetestowano istnienie kointegracji ułamkowej pomiędzy badanymi chrakterystykami akcji. Stwierdzono brak istotnej statystycznie kointegracji ułamkowej, co sugeruje konieczność odrzucenia ostatniego wariantu MDH odnośnie do badanych szeregów czasowych we wszystkich przypadkach. Świadczy to o tym, że nie wykazują one wzajemnej zależności długoterminowej. Tak więc analizowane szeregi czasowe nie są generowane przez wspólny proces napływu informacji z długą pamięcią. Występuje korelacja pomiędzy zmiennością stóp zwrotu a wielkością obrotów akcji wszystkich spółek z rozważanych rynków. Badania pozwoliły na ustalenie, że mieszanka obróconych kopuł oraz współczynnik korelacji Kendalla umożliwiły sprawdzenie zależności pomiędzy ekstremalnymi stopami zwrotu i ekstremalną wielkością obrotów. Wyniki empiryczne odzwierciedlają istotne zależności pomiędzy wysoką zmiennością stop zwrotu i wysoką wielkością obrotów. Jednak struktury zależności w przypadku poszczególnych spółek różnią się istotnie. W przypadku spółek z CAC40 wysokie wielkości obrotów akcjami nie są tak często skorelowane z wysokimi stopami zwrotu jak z niskimi. Natomiast w przypadku FTSE100 wysokie stopy zwrotu są przeważnie skorelowane z wysokimi wielkościami obrotów.
Źródło:
Managerial Economics; 2013, 14; 39-60
1898-1143
Pojawia się w:
Managerial Economics
Dostawca treści:
Biblioteka Nauki
Artykuł
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