KEMPE, S.; HUBRICH, H.-P.; SUCKSTORFF, K. The Story of the 1833 Fercher Survey, Postojnska Jama, Continues: An Additional Document and Newly Discovered Inscriptions. Acta Carsologica, Ljubljana, Slovenija, v. 35, n. 1, 2006. DOI: 10.3986/ac.v35i1.249. Disponível em: https://ojs.zrc-sazu.si/carsologica/article/view/249. Acesso em: 5 may. 2024.