TRAVASSOS, L. E. P.; KRANJC, A. Prof. Dr. Heinz Charles Kohler (1945-2010). Acta Carsologica, Ljubljana, Slovenija, v. 40, n. 1, 2011. DOI: 10.3986/ac.v40i1.71. Disponível em: https://ojs.zrc-sazu.si/carsologica/article/view/71. Acesso em: 2 may. 2024.