BUTIJER, Stjepo. Improving tourism planning system in protected areas. In: BAŠIĆ, Nikola; FARIČIĆ, Josip (eds.). Turizam i zaštićena područja: zbornik radova sa znanstvenog kolokvija. [s.l.] : Morepress Books,2025. p. 39–49. DOI: 10.15291/9789533315447.02. Disponível em: https://morepress.unizd.hr/books/index.php/press/catalog/book/138/chapter/844. Acesso em: 11 may. 2026.