@inproceedings{M089.025,
author={Peremans, H. and Van Campenhout, J.M.},
title={Merging Ultrasonic Sensor Reading into a Consistent Environment Model},
booktitle={Proceedings Intelligent Robots and Computer Vision III: Systems and Applications},
year={1989},
month={11},
pages={277-284},
publisher={SPIE},
address={Philadephia},
}