Preface

We have a unique pleasure to present subsequent issue of REF journal. Predominated The complexity of economic system dominates these scientific papers. Authors offer multidimensional view on dealing, measuring and concluding on complexity and cohesiveness problems. In presented works we can find authors interest including agriculture, finance market, industry, energy supply area. What is the most interesting and worth recommendation is authors approach. It address problems as not to be isolated, but grounded in system, being part of it.