Jakubowski A, Seidlová A. UNESCO Transboundary Biosphere Reserves as laboratories of cross-border cooperation for sustainable development of border areas. The case of the Polish–Ukrainian borderland. BGSS [Internet]. 2022 Aug. 4 [cited 2024 Apr. 25];(57):125-39. Available from: https://apcz.umk.pl/BGSS/article/view/38074