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Author(s):
1. Sonja Ketin, Faculty of Maritime Academic Studies, Belgrade, Belgrade 2- University of Defense of Belgrade, Milit, Serbia
2. Boban Kostić, Fakultet za ekonomiju i inženjerski menadžment, Katedra za ekologiju i agrobiznis, Univerzitet Akademija poslovnih nauka u Novom Sadu, Cvecarska 2, Novi Sad, Srbija , Serbia
3. Rade Biočanin, Srpska kraljevska akademija inovacionih nauka (SKAIN) Beograd, Serbia
Abstract