Tešin, Aleksandra, Sanja Kovačić, Tamara Jovanović, Miroslav D. Vujičić, and Sanja Obradović. 2020. “ECOTOURISM CONSTRAINTS: WHAT PREVENTS DOMESTIC TOURISTS IN SERBIA FROM VISITING ECO-DESTINATIONS?”. Journal of the Geographical Institute “Jovan Cvijić” SASA 70 (3):255–271. https://doi.org/10.2298/IJGI2003255T.