KRANJC, A. Which are the "Great Caves of the World". Acta Carsologica, Ljubljana, Slovenija, v. 37, n. 2-3, 2008. DOI: 10.3986/ac.v37i2-3.521. Disponível em: https://ojs.zrc-sazu.si/carsologica/article/view/521. Acesso em: 4 may. 2024.