1. Lindenberger, J (1993) Laser-Profilmessung zur topographischen Geländeaufnahme, Deutsche Geodätische Kommision, Reihe C, Heft 400, München
2. Sönne W., O. Heinze, C. Hug, U. Kälberer (1993) Positioning and Orientation of a Laser/Radar-Altimeter Survey Flight with GPS and INS, Proceedings of the Gyro Symposium, Stuttgart, September 1993
3. Hug C. (1994) The Scanning Laser Altitude and Reflectance Sensor — An Instrument for Efficient 3D Terrain Survey, Int. Archives of Photogrammetry and Remote Sensing, Vol. 30, Part l, pp 100–107
4. Hug, C. (1996) Combined Use of Laser Scanner Geometry and Reflectance Data to Identify Surface Objects, Proceedings of the OEEPE Workshop “3-D City Models”, Oct. 9–11, 1996, Institut für Photogrammetric Universität Bonn, 1996