ZYRIANOV, A.I.; KOROLEV, A.Yu.; MYSHLYACTCEVA, S.E.; SAFARYAN, A.A. ECOLOGICAL TOURISM FEATURES AND PERSPECTIVES IN THE URAL AND IN THE PERM KRAI. Proceedings of the YSU C: Geological and Geographical Sciences, Yerevan, Armenia, v. 50, n. 3 (241), p. 47–55, 2016. DOI: 10.46991/PYSU:C/2016.50.3.047. Disponível em: https://journals.ysu.am/index.php/proceedings-geol-geogr/article/view/vol50_no3_2016_pp047-055. Acesso em: 14 jul. 2024.