Authors
Giani Gradinaru
Faculty of Cybernetics, Bucharest University of Academic Studies, Bucharest, Romania
Institute of National Economy, Romanian Academy, Bucharest, Romania
Bogdan Florin Matei
Faculty of Cybernetics, Bucharest University of Academic Studies, Bucharest, Romania
Andreea Ionica
Faculty of Management, Bucharest University of Academic Studies, Bucharest, Romania
Todor Yalamov
Faculty of Economics and Business, Sofia University “St. Kliment Ohridski”, Sofia, Bulgaria