Quirós, Elia, and Aurora Cuartero. “Posibilidades estereoscópicas De Los Datos Espaciales”. GeoFocus. International Review of Geographical Information Science and Technology, no. 5 (December 31, 2005): 65–76. Accessed April 26, 2025. https://geofocus.org/index.php/geofocus/article/view/78.