Kiselyov YO, Adamenko MI, Rudy RM. Conceptual fundamentals of ecological tourism development in Ukraine. J Educ Health Sport [Internet]. 2020 Aug. 21 [cited 2024 Apr. 20];10(8):298-307. Available from: https://apcz.umk.pl/JEHS/article/view/JEHS.2020.10.08.035