PISHGAHIFARD, Z.; SALEHI, H. Geo-economics and Considerations on the Tourism Industry with Emphasis on Historical Cities Tourism and Ecotourism in Iran. International Journal of Sciences: Basic and Applied Research (IJSBAR), [S. l.], v. 15, n. 1, p. 301–310, 2014. Disponível em: https://gssrr.org/index.php/JournalOfBasicAndApplied/article/view/2155. Acesso em: 3 jul. 2024.