L. Sanna, F. Gazquez, and J.-M. Calaforra, “A geomorphological and speleological approach in the study of hydrogeology of gypsum karst of Sorbas (SE Spain)”, GFDQ, vol. 35, no. 2, pp. 153–166, Dec. 2012, doi: 10.4461/GFDQ.2012.35.14.