REQUES VELASCO, P. José M. Santos y María Pilar Borderías (2001): Introducción al análisis medioambiental de un territorio. GeoFocus. International Review of Geographical Information Science and Technology, [S. l.], n. 2, p. 4–5, 2014. Disponível em: https://geofocus.org/index.php/geofocus/article/view/309. Acesso em: 3 apr. 2025.