Ziryanov, Aleksander I., Andriej Y. Korolev, Swietlana E. Mishlavtceva, and Azat A. Safarian. “Approaches to Active Tourism in the Urals and in Perm Krai”. Turyzm/Tourism 26, no. 1 (June 30, 2016): 79–84. Accessed February 11, 2026. https://czasopisma.uni.lodz.pl/tourism/article/view/5337.