JOHANN, M.; ANASTASSOVA, L. . The perception of tourism product quality and tourist satisfaction: the case of polish tourists visiting Bulgaria. European Journal of Tourism Research, [S. l.], v. 8, p. 99–114, 2014. DOI: 10.54055/ejtr.v8i.153. Disponível em: https://ejtr.vumk.eu/index.php/about/article/view/153. Acesso em: 15 oct. 2026.