Rhind, D., and N. Green, 1988. Design of a geographical information system for a heterogeneous scientific
community. In International Journal of Geographical Information Systems, 2, 175.
Tomlin, D., 1990. Geographic Information Systems and Cartographic Modeling Englewood Cliffs Prentice
Hall.
Turk, A., 1992. GIS Cogency, cognitive ergonomics in geographic information systems. Unpublished
dissertation. Melbourne: Department of Surveying and Land Information, University of Melbourne.
Unwin, D., 1990. A syllabus for teaching geographical information systems. In International Journal of
Geographical Information Systems, 4, 461-462.
Voisard, A., 1995. Open GIS: A tool for environmental information management. In Kremers, H. and W
Pillmann (Eds.), Space and Time in Environmental Information Systems, 9th International Symposium on
Computer Science for Environmental Protection, pp. 160-167.