Архіпова, Г.І., and С.М. Ярова. “Ecotourism in the Territories and Objects Protected Areas”. Proceedings of National Aviation University 39, no. 2 (February 1, 2009): 100–104. Accessed June 21, 2024. https://jrnl.nau.edu.ua/index.php/visnik/article/view/1720.