Koichi Sagawa, Hikaru Inooka, Yutaka Satoh. Non-restricted measurement of walking distance. In Proceedings of the IEEE International Conference on Systems, Man & Cybernetics: "Cybernetics Evolving to Systems, Humans, Organizations, and their Complex Interactions", Sheraton Music City Hotel, Nashville, Tennessee, USA, 8-11 October 2000. pages 1847-1852, IEEE, 2000. [doi]
Abstract is missing.