Kertész, Ádám. “Report on the Eleventh International Conference on Environmental, Cultural, Economic, and Social Sustainability : 2-23 January 2015, Copenhagen”. Hungarian Geographical Bulletin 64, no. 2 (July 3, 2015): 159. Accessed December 21, 2024. https://ojs3.mtak.hu/index.php/hungeobull/article/view/2814.