1. An overview of the Edwards-Trinity aquifer system, central-west Texas;Anaya,2001
2. Ashworth, J.B., Hopkins, J., 1995. Aquifers of Texas: Texas Water Development Board Report, vol. 345, p. 69.
3. Comparison of chemical hydrogeology of the carbonate peninsulas of Florida and Yucatan;Back;J. Hydrol.,1970
4. Barker, R.A., Ardis, A.F., 1992. Configuration of the Base of the Edwards–Trinity Aquifer System and Hydrogeology of the Underlying Pre-Cretaceous Rocks, West Central Texas: U.S. Geological Survey Water Resources Investigation Report 91-4071, 25.
5. Evolution of selenium concentrations and speciation in groundwater flow systems: upper Floridan (Florida) and Carrizo Sand (Texas) aquifers;Basu;Chem. Geol.,2007