3 Ullrich, A. Studnicka, N. Hollaus, M. Briese, C. Wagner, W. Doneus, M. Muecke, W. 2007 Improvements in DTM generation by using full-waveform airborne laser scanning data. 7th International Conference on "Laser Scanning and Digital Aerial Photography. Today and Tomorrow" Moscow LIDAR, laser scanner, metodologia, remote sensing, lanscape, paesaggio, austria http://publik.tuwien.ac.at/files/pub-geo_2121.pdf