ZIKOV, M.; ANASTASOVSKI, V. Natural heritage of the Republic of Macedonia and manner of its protection. Macedonian Journal of Ecology and Environment, [S. l.], v. 1, n. 1-2, p. 30–42, 1993. Disponível em: http://mail.mjee.org.mk/index.php/mjee/article/view/1. Acesso em: 24 jan. 2025.