PERKO, Drago. Regional geography and Ivan Gams. Dela, Ljubljana, SI, n. 20, p. 101–114, 2003. DOI: 10.4312/dela.20.101-114. Disponível em: https://journals.uni-lj.si/Dela/article/view/dela.20.10.101-114. Acesso em: 15 jan. 2025.