Magdalena Turek Rahoveanu Dunarea de Jos University of Galati, Romania Magdalena Turek Rahoveanu Dunarea de Jos University of Galati, Romania Vesna Parausic Institute of Economics Agriculture, Serbia Vesna Parausic Institute of Economics Agriculture, Serbia Lădaru Georgiana Raluca Bucharest University of Economic Studies, Romania Lădaru Georgiana Raluca Bucharest University of Economic Studies, Romania Anna Veber Omsk State Agrarian University, Russian Federation Anna Veber Omsk State Agrarian University, Russian Federation Darko Marjanović Institute of Economic Sciences, Belgrade Darko Marjanović Institute of Economic Sciences, Belgrade Mikail Khudzhatov RUDN University, Russia Mikail Khudzhatov RUDN University, Russia Dejan Sekulić University of Kragujevac, RS Serbia Dejan Sekulić University of Kragujevac, RS Serbia Nancu Dumitru Ovidius University of Constanta, Romania Nancu Dumitru Ovidius University of Constanta, Romania Marija Kostić University of Kragujevac, RS Serbia Marija Kostić University of Kragujevac, RS Serbia Simona Monteleone University of Catania, Italy Simona Monteleone University of Catania, Italy