ZSILINCSAR, Walter. Municipalities Cooperation – a case study Voitsberg. Journal for Geography, [S. l.], v. 1, n. 2, p. 21–36, 2006. DOI: 10.18690/rg.1.2.2880. Disponível em: https://old.journals.um.si/index.php/geography/article/view/2880. Acesso em: 8 nov. 2025.