OSBORNE, R. A. L. Significance and Monitoring. Acta Carsologica, Ljubljana, Slovenija, v. 31, n. 1, 2016. DOI: 10.3986/ac.v31i1.401. Disponível em: https://ojs.zrc-sazu.si/carsologica/article/view/401. Acesso em: 25 nov. 2024.