Bulgarian Academy
of Science;
Technische Informationsbibliothek
und
Universitätsbibliothek Hannover (TIB/UB);
Faculty for Organization and
Informatics, Varazdin,
Croatia;
Faculty of Economy
and Business Administration,
University of
Craiova, Romania;
Department of Economics and Administrative
Sciences
Fatih
University,
Istanbul, Turkey;
Pedagogical institute of the Southern Federal University,
Rostov-on-Don, Russia;
JS «Volga Research Institute of Hydrocarbon Feed», Kazan, Russia;
Department of Forestry and Natural Environment
Department of Business Administration,
School of Business and Economics
Technological Educational Institute of Kavala, Greece
Faculty of Economics and Management,
University
of Defence,
Czech Republic
