Autonomous Terrain Mapping and Classification Using Hidden Markov Models.
Wolf, Denis F.; Sukhatme, Gaurav S.; Fox, Dieter; Burgard, Wolfram: Autonomous Terrain Mapping and Classification Using Hidden Markov Models. Proceedings of the 2005 IEEE International Conference on Robotics and Automation, ICRA 2005, April 18-22, 2005, Barcelona, Spain, pp. 2026-2031, IEEE, 2005