VIDAL, M. J. José Miguel Santos (2002): El tratamiento informático de la información geográfica. GeoFocus. International Review of Geographical Information Science and Technology, [S. l.], n. 3, p. 6–8, 2003. Disponível em: https://www.geofocus.org/index.php/geofocus/article/view/35. Acesso em: 30 apr. 2025.