Urs Wegmüller Tazio Strozzi Reynald Delaloye Hugo Raetzo Landslide mapping in Switzerland with ENVISAT ASAR. 1829-1832 2012 IGARSS https://doi.org/10.1109/IGARSS.2012.6351155 conf/igarss/2012 db/conf/igarss/igarss2012.html#WegmullerSDR12