References
Aller, L., Bennett, T., Lehr, J. H., Petty, R.J., and Hackett G., 1987. DRASTIC: A standardized system for evaluating ground water pollution potential using hydrogeologic settings. NWWA/EPA Series, EPA-600/2-87-035.
Campbell, Linda. 2003. Endangered and Threatened Animals of Texas: Their Life History and Management. Austin: Texas Parks and Wildlife.
Hammond Jr.,Weldon W. and Hardberger, Amy, 2005. A GIS Model for Assessing Recharge Potential. Presentation at the 25th Annual ESRI International User Conference, July 25-29, 2005, San Diego, CA, http://gis.esri.com/library/userconf/educ05/papers/pap1418.pdf
Rundquist, Donald C., Donn A. Rodekodr, and Albert J. Peters, Richard L. Ehrman, Liping Di, and Gene Murray, 1991. Statewide Groundwater - Vulnerability Assessment in Nebraska Using the DRASTIC/GIS Model. In: The GIS Applications Book: Examples in Natural Resources: A Compendium, William Ripple (ed.), 117-124. Bethesda: ASPRS, 1994.
Slade, Jr., Raymond M., J. Taylor Bentley, and Dana Michaud, 2002. Results of Streamflow Gain-Loss Studies in Texas, With Emphasis on Gains From and Losses to Major and Minor Aquifers. Austin: United States Geological Survey, in cooperation with the Texas Water Development Board.
Stone, Dan and Schindel, Geary M., 2002. The Application of GIS in Support of Land Acquisition for the Protection of Sensitive Groundwater Recharge Properties in the Edwards Aquifer of South-Central Texas. Journal of Cave and Karst Studies 64(1): 38-44.
U.S. Bureau of the Census. 2006a. Housing Unit Estimates for the 100 Fastest Growing Counties With 5,000 or More Housing Units in 2006: April 1, 2000 to July 1, 2006 (HU-EST2006-05). Population Division, U.S. Census Bureau, Release Date: August 15, 2007. http://www.census.gov/popest/housing/HU-EST2006-top100.html. Last Accessed November 24, 2007.
U.S. Bureau of the Census. 2006b. Annual Estimates of the Population for Counties of Texas: April 1, 2000 to July 1, 2006 (CO-EST2006-01-48). Population Division, U.S. Census Bureau, Release Date: March 22, 2007. http://www.census.gov/popest/counties/tables/CO-EST2006-01-48.xls. Last Accessed November 24, 2007.