JUŽNIČ, S. Babbageʼs Calculating Machines, the Proteus From Postojna Cave, and the Carniolan Museum Society. Acta Carsologica, Ljubljana, Slovenija, v. 34, n. 1, 2016. DOI: 10.3986/ac.v34i1.286. Disponível em: https://ojs.zrc-sazu.si/carsologica/article/view/286. Acesso em: 2 may. 2024.