Obrenić, Jelena, Željko Bjeljac, and Aleksandra Terzić. 2015. “ASSESSMENT MODEL OF NATURE-BASED TOURISTIC MOTIVES OF THE OVČAR-KABLAR GORGE (SERBIA)”. Journal of the Geographical Institute “Jovan Cvijić” SASA 65 (3):407-22. https://doi.org/10.2298/IJGI1503407O.