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2. AT&T Bell Laboratories, An Optical Rangefinder for Autonomous Robot Cart Navigation;Miller;Society of Photo-optical Instrumentation Engineers, vol. 852, Mobile Robots II,1988
3. Proceedings of the IEEE/SICE International Conference on Industrial Electronics and Control Instrumentation, IECON '85;Hongo,1985
4. On the computation of motion from sequence of images—A review;Aggarwal,1988
5. An ultrasonic ranging system for robot end-effector position measurement;Figueroa,1988