1. Processing of laser scanner data—Algorithms and applications;Axelsson;ISPRS Journal of Photogrammetry and Remote Sensing,1999
2. Brovelli, M.A., Cannata, M., Longoni, U.M., 2002. Managing and processing LIDAR data within GRASS. In: Proceedings of the Open Source GIS-GRASS Users Conference, Trento, Italy, 11–13 September. http://www.ing.unitn.it/grass/conferences/GRASS2002/proceedings/proceedings/pdfs/Brovelli_Maria_Antonia.pdf (accessed 22.07.2008)
3. Ground surface estimation from airborne laser scanner data using active shape models;Elmqvist;International Archives of Photogrammetry Remote Sensing and Spatial Information Sciences,2002
4. Terrain modeling and analysis using laser scanner data;Elmqvist;International Archives of Photogrammetry, Remote Sensing and Spatial Information Sciences,2001
5. Introductory Digital Image Processing: A Remote Sensing Perspective;Jensen,2005