CZERNEK , Katarzyna. Innovation in Urban Tourism and its Determinants. Studia Oeconomica Posnaniensia, Poznan, Polska, v. 2, n. 3, p. 55–79, 2014. DOI: 10.18559/8rh6ha35. Disponível em: https://journals.ue.poznan.pl/soep/article/view/3206. Acesso em: 3 sep. 2026.