KASK, S.; KULL, T.; ORRU, K. Understanding of sustainable tourism among Russian tourism managers. European Journal of Tourism Research, [S. l.], v. 14, p. 101–105, 2016. DOI: 10.54055/ejtr.v14i.246. Disponível em: https://ejtr.vumk.eu/index.php/about/article/view/246. Acesso em: 20 oct. 2026.