1. Faculty of Business Management, Vilnius Gediminas Technical University, Sauletekio ave. 11, LT-10223,
Vilnius, Lithuania; Faculty of Economics, University of Kragujevac, Liceja Kneževine Srbije 3, Kragujevac, Serbia
2. Faculty of Business Management, Vilnius Gediminas Technical University, Sauletekio ave. 11, LT-10223, Vilnius, Lithuania
3. Faculty of Economics, University of Kragujevac, Liceja Kneževine Srbije 3, Kragujevac, Serbia