1.
Tanács E. Koulov, B. and Zhelezov, G. (eds): Sustainable Mountain Regions: Challenges and Perspectives in Southeastern Europe. HunGeoBull [Internet]. 2017Mar.31 [cited 2024Apr.28];66(1):77-0. Available from: https://ojs.mtak.hu/index.php/hungeobull/article/view/567