1. Driscoll FG (1986) Groundwater and wells. Johnson Division, UOP Inc., St. Paul, Minnesota 55165, 3-para/ pp. 168–177.
2. Tarrant LH (1973) Geophysical methods used in prospecting for oil, in Hobson GD and Pohl W eds. (1973) Modern petroleum technology, p. 81, Applied Science Publishers Ltd; England: The Institute of Petroleum Geology.
3. Trollinger WV (1968) Surface evidence of deep structure in the Delware Basin: “Delware Basin Exploration”, Guidebook. West Texas Geol. Soc. Pub. #68-55, pp. 87–104; in Halbouty MT (1967) Salt domes.
4. USGS, U.S. Army (1998) Earth Science Applications. National Training Center, Fort Irwin, California (
http://wrgis.wr.usgs.gov./docs/geologic
)