MARTSENIUK, L. V. DIRECTIONS OF EXTREME TOURISM IN UKRAINE. Science and Transport Progress , [S. l.], n. 1(61), p. 55–61, 2016. DOI: 10.15802/stp2016/60960. Disponível em: https://stp.ust.edu.ua/article/view/60960. Acesso em: 14 may. 2025.