KEMPE, S.; HUBRICH, H. P.; SUCKSTORFF, K. The History of Postojnska Jama: The 1748 Joseph Anton Nagel Inscriptions in Jama near Predjama and Postojnska Jama. Acta Carsologica, Ljubljana, Slovenija, v. 35, n. 2-3, 2006. DOI: 10.3986/ac.v35i2-3.237. Disponível em: https://ojs.zrc-sazu.si/carsologica/article/view/237. Acesso em: 2 may. 2024.