1. “Electronic route guidance by AUTOGUIDE: the London demonstration.”;Belcher;Traffic Enginnering and Control,1987
2. Fukui, R., Y. Noji and M. Hashizume (1989). “Individual communication function of RACS (Road Automobile Communication System)” IEEE VNIS'89, 206–213.
3. Hoffmann. G., J. Sparmann, R. v. Tomkewitsch and W. Zechnall (1988). “LISB research project: Guidance and Information System Berlin”. Road and Traffic 2000. Proceeding of International Road and Traffic Conference Berlin, 6–9 September 1988 Vol. 4/2, 3–8.
4. Iwaki, F., M. Kakihara and M. Sasaki (1989). “Recognition of vehicle's location for navigation” IEEE VNIS'89, 131–138.
5. Kamijo, S., K. Okumura and A. Kitamura (1989). “Digital road map data base for vehicle navigation and road information system” IEEE VNIS'89, 319–323.