Veselinović Petar,1Lukić Aleksandar,2 Pavlović Danijela3 1 Ekonomski fakultet, Univerzitet u Kragujevcu, Srbija 2 3 Visoka škola "Akademija za poslovnu ekonomiju", Čačak, Srbija
Pavlović Danijela,1Pavlović Miloš,2 Grdinić Vladimir3 1 HEI Academy for Business Economy, Čačak, Serbia 2 3 Belgrade Business and Arts Academy of applied studies, Belgrade, Serbia