1. Anderson TW (1992) Electrical-analog analysis of the hydrologic system, Tucson basin, Southeastern Arizona. U.S. Geological Survey Water-Supply Paper 1939-C, p 34
2. Anon (2000) SSG software. The Scientific Software Group, Washington. http://www.scisoftware.com
3. Boulton NS (1954) Unsteady radial flow to a pumped well allowing for delayed yield from storage. Int Assoc Sci Hydrol Publ 37:472–477
4. Boulton NS (1963) Analysis of data from non-equilibrium pumping tests allowing for delayed yield from storage. Proc Inst Civ Eng 26:469–482
5. Boulton NS (1973) The influence of delayed drainage on data from pumping tests in unconfined aquifers. J Hydrol 19:157–169