ČUK, A. Development of the Underground Railway System on the Example of Postojnska jama. Acta Carsologica, Ljubljana, Slovenija, v. 32, n. 1, 2016. DOI: 10.3986/ac.v32i1.375. Disponível em: https://ojs.zrc-sazu.si/carsologica/article/view/375. Acesso em: 27 apr. 2024.