TRČEK, B. The use of natural tracers in the study of the unsaturated zone of a karst aquifer . Geologija, [S. l.], v. 48, n. 1, p. 141–152, 2005. DOI: 10.5474/geologija.2005.013. Disponível em: https://www.geologija-revija.si/index.php/geologija/article/view/1056. Acesso em: 3 feb. 2023.