1. Asche, H. and Herrmann, C. M. Electronic Mapping Systems: A Multimedia Approach to Spatial Data Use. Proceedings of the 16th International Cartographic Conference. Cologne, Germany. pp.1101–1108.
2. Baker, R. 1993.Designing the Future: The Computer Transformation of Reality., 162–183. Hong Kong: Thames and Hudson.
3. Berlyant, A. M. and Ushakova, L. A. Dynamic Maps as a New Type of Cartographic Production. Proceedings of the 16th International Cartographic Conference. Cologne, Germany. pp.489–494.