TY - JOUR A1 - Wunderle, S. A1 - Foppa, N. A1 - Oesch, D. A1 - Hauser, A. T1 - Operational monitoring of the European alps using NOAA-AVHRR : imagery for analysis of the multi-year vegetation index (NDVI) JO - Geogr. Helv. J1 - GH VL - 58 IS - 2 SP - 131 EP - 140 Y1 - 2003/06/30 PB - Geographisch-Ethnographische Gesellschaft Zürich SN - 2194-8798 UR - https://gh.copernicus.org/articles/58/131/2003/ L1 - https://gh.copernicus.org/articles/58/131/2003/gh-58-131-2003.pdf DO - 10.5194/gh-58-131-2003 ER -