VERSTAPPEN, Herman Th. Satellite remote sensing, geomorphological survey and natural hazard zoning. Some new developments ad ITC, the Netherlands. Geografia Fisica e Dinamica Quaternaria, [S. l.], v. 2, p. 103–109, 1989. Disponível em: https://www.gfdq.glaciologia.it/index.php/GFDQ/article/view/1143.. Acesso em: 30 may. 2026.