BIERNACKA , Joanna. Analysis of Innovation in Medical Tourism in the Zachodniopomorskie Region. Studia Oeconomica Posnaniensia, Poznan, Polska, v. 2, n. 2, p. 55–67, 2014. DOI: 10.18559/9jp02t67. Disponível em: https://www.journals.ue.poznan.pl/soep/article/view/3177. Acesso em: 22 sep. 2026.