KYFYAK, Oleksandr. Marketing in the organization of the development ecological tourism the Carpathian region. Herald of Economics, [S. l.], n. 2, p. 45–58, 2022. DOI: 10.35774/visnyk2022.02.045. Disponível em: https://visnykj.wunu.edu.ua/index.php/htneu/article/view/1346.. Acesso em: 5 oct. 2024.