Salas Challco, Betsy Mariby, Joan Masó Pau, and Lluís Pesquer Mayos. “ESTUDIO DEL ESTANDAR WATERML”. GeoFocus. International Review of Geographical Information Science and Technology, no. 19 (July 10, 2017): 129–150. Accessed April 30, 2025. https://www.geofocus.org/index.php/geofocus/article/view/485.