1. Deetz , C.H. O.S. Adams 1934 Elements of Map Projection with Applications to Map and Chart Construction
2. EGSC 2006 http://egsc.usgs.gov/isb//pubs/MapProjections/projections.html
3. Kernodle , J.M. 1996
4. Using a geographic information system to develop a groundwater flow model, in Regional aquifer systems of the United States, aquifers of the western mountain area;Kernodle;American Water Resources Association Monograph,1988
5. Finite-element mesh generation from mappable features;Kuniansky;International Journal of Geographical Information Systems,1993