THIELEN, J.; SALOMON, P.; DE ROO, A. Geographical information systems – An integral part of the European Flood Alert System (EFAS). GeoFocus. International Review of Geographical Information Science and Technology, [S. l.], n. 8, p. 12–16, 2008. Disponível em: https://geofocus.org/index.php/geofocus/article/view/134. Acesso em: 7 may. 2025.