2) Y.Goto, K. Matsuzaki, I. Kweon, T. Obatake, “CMU Sidewalk Navigation System : A Blackboard-Based Outdoor Navigation System Using Sensor Fusion with Colored-Range Images”, IEEE-ACM Fall Joint Computer Conference, 1986, p. 105-113
3) Y.Goto, A. Stentz, Mobile Robot Navigation : The CMU System, IEEE Expert, Vol. 2, No .4, 1987 winter