5[2]David Woodward, Touch the Past , Proceedings of 19th International Cartographic Conference.
6[3]M. F. Goodchild, Cartographic Futures on a Digital Earth, Proceedings of 19th International Cartographic Conference.
7[4]D.R.F. Taylor, Maps and Mapping in the Information Era, Proceedings of 18th International Cartographic Conference.
8[5]John Pickles,Cartography, Digital Transitions, and Questions of History, Proceedings of 19th International Cartographic Conference.
9[6]David Rhind Business, Governments and Technology: Inter- linked Causal Factors of Change in Cartography,Proceedings of 19th International Cartographic Conference.
10[7]Alexander Martynenko, Global Geoinformatic Mapping as the Methodology and Technology of the Future, Proceedings of 19th International Cartographic Conference.
