Yongmei Liu, Toshimitsu Tanaka, Tsuyoshi Yamamura, Noboru Ohnishi. Character-based mobile robot navigation. In Proceedings 1999 IEEE/RSJ International Conference on Intelligent Robots and Systems. Human and Environment Friendly Robots with High Intelligence and Emotional Quotients, October 17-21,1999, Hyundai Hotel, Kyongju, Korea. pages 610-616, IEEE, 1999. [doi]