Hutchinson, M. F., Gallant, J. C. 1999. Geographical Information Systems, Chapter 9: Representation of Terrain. John Wiley & Sons, Inc., New York, NY. Volume 1, Number 2. Pages 105-124

GIS

http://www.geos.ed.ac.uk/~gisteac/gis_book_abridged/files/ch09.pdf

This chapter outlines the role of terrain representations in geographic information systems. It describes the effects of tophographical data sources and digital elevation models (DEMs) along with the associated issues of spatial scale.