KIERNAN, K. Distribution and Character of Karst in the Lao PDR. Acta Carsologica, Ljubljana, Slovenija, v. 38, n. 1, 2009. DOI: 10.3986/ac.v38i1.137. Disponível em: https://ojs.zrc-sazu.si/carsologica/article/view/137. Acesso em: 22 nov. 2024.