S. D. Hovorka, R. E. Mace and E. W. Collins, “Perme- ability Structure of the Edwards Aquifer, South Texas- Implications for Aquifer Management: Bureau of Eco- nomic Geology,” The University of Texas at Austin, Report of Investigations No. 250, 1998, p. 55.
 H. J. Thomasson, F. H. Olmstead and E. R. LeRoux, “Geo- logy, Water Resources, and Usable Ground Water Stor- age Capacity of Part of Solano County, CA,” U.S. Geo- logical Survey Water Supply Paper 1464, 1960, p. 693.
 M. Razack and D. Huntley, “Assessing Transmissivity from Specific Capacity in a Large and Heterogeneous Alluvial Aquifer,” Ground Water, Vol. 29, No. 6, 1991, pp. 856- 861. doi:10.1111/j.1745-6584.1991.tb00572.x
 D. Huntley, R. Nommensen and D. Steffey, “The Use of Specific Capacity to Assess Transmissivity in Fractured- Rock Aquifers,” Ground Water, Vol. 30, No. 3, 1992, pp. 396-402. doi:10.1111/j.1745-6584.1992.tb02008.x
 A. El-Naqa, “Estimation of Transmissivity from Specific Capacity Data in Fractured Carbonate Rock Aquifer, Central Jordan,” Environmental Geology, Vol. 23, No. 1, 1994, pp. 73-80. doi:10.1007/BF00773142
 S. Y. Acheampong and J. W. Hess, “Hydrogeologic and Hydrochemical Framework of the Shallow Groundwater System in the Southern Voltaian Sedimentary Basin, Gha- na,” Hydrogeology, Vol. 6, No. 4, 1998, pp. 527-537. doi:10.1007/s100400050173
 M. Aboufirassi and M. A. Marino, “Cokriging of Aquifer Transmissivities from Field Measurements of Transmis- sivity and Specific Capacity,” Journal of the Internatio- nal Association for Mathematical Geology, Vol. 16, No. 1, 1984, pp.19-35. doi:10.1007/BF01036238
 J. F. Muńoz-Pardo and R. Garcia, “Estimation of the Trans- missivity of the Santiago Aquifer, Chile, Using Different Geostatistical Methods,” Groundwater Management: Quan- tity and Quality (Proceedings of the Benidorm Symposium), IAHS Publication No. 188, October 1989.
 H. Lance, D. Huntley and M. Razack, “Cokriging Limi- ted Transmissivity Data Using Widely Sampled Specific Capacity from Pump Tests in an Alluvial Aquifer,” Ground- water, Vol. 34, No. 1, 1996, pp.12-18. doi:10.1111/j.1745-6584.1996.tb01859.x
 M. Jalludin and M. Razack, “Assessment of hydraulic Properties of Sedimentary and Volcanic Aquifer Systems under Arid Conditions in the Republic of Djibouti (Horn of Africa),” Hydrogeology, Vol. 12, No. 2, 2004, pp. 159- 170. doi:10.1007/s10040-003-0312-2
 T. Verbov?ek, “Estimation of Transmissivity and Hydrau- lic Conductivity from Specific Capacity and Specific Ca- pacity Index in Dolomite Aquifers,” Journal of Hydro- logic Engineering, Vol. 13, No. 9, 2008, pp. 817-823.
 A. I. Johnson, R. P. Moston and S. F. Versaw, “Labora- tory Study of Aquifer Properties and Well Design for an Artificial Recharge Site,” U.S. Geological Survey Water Supply Paper, No. 1615-H, 1966, pp. H23-H25.
 P. G. Adyalkar and V. V. S. Mani, “An Attempt at Estimating the Transmissibilities of Trappean Aquifers from Specific Capacity Values,” Journal of Hydrology, Vol. 17, No. 3, 1972, pp. 237-241. doi:10.1016/0022-1694(72)90007-8
 P. G. Adyalkar, J. P. Dias and R. S. Srihari, “Empirical Me- thods for Evaluating Hydraulic Properties of Basaltic Wa- ter Table Aquifers with Specific Capacity Values,” Indian Journal of Earth Sciences, Vol. 8, No. 1, 1981, pp. 69-75.
 S. Y. Hamm, J. Y. Cheong, S. Jang, C. Y. Jung and B. S. Kim, “Relationship between Transmissivity and Specific Capacity in the Volcanic Aquifers of Jeju Island, Korea,” Journal of Hydrology, Vol. 310, No.1-4, 2005, pp. 111- 121. doi:10.1016/j.jhydrol.2004.12.006
 S. M. Yidana, D. Ophori and B. Banoeng-Yakubo, “Hydrogeological and Hydrochemical Characterization of the Voltaian Basin: The Afram Plains Area, Ghana,” Environ- mental Geology, Vol. 53, No. 6, 2008, pp. 1213-1223. doi:10.1007/s00254-007-0710-1
 P. M. Clifton and S. P. Neuman, “Effects of Kriging and Inverse Modeling on Conditional Simulation of the Avra Valley Aquifer in Southern Arizona,” Water Resources Research, Vol. 18, No. 4, 1982, pp. 1215-1234. doi:10.1029/WR018i004p01215
 S. Ahmed and G. De Marsily, “Comparison of Geostatistical Methods for Estimating Transmissivity Using Data on Transmissivity and Specific Capacity,” Water Resour- ces Research, Vol. 23, No. 9, 1987, pp. 1717-1737. doi:10.1029/WR023i009p01717
 Inter-African Committee for Hydraulic Studies (ICHS), “Explanatory Notice and Recommended Usage of the Map of Potential Groundwater Resources in Western and Central Africa 1:5,000,000,” Orléans, ICHS, BRGM, 1986.
 J. A. Ayamsegna and P. Amoateng-Mensah “Well Moni- toring: World Vision’s Experience in Ghana,” Sustain- able Environmental Sanitation and Water Services: 28th WEDC Conference, Kolkata (Calcutta), 2002. (Cited 24 July 2009) http://www.ghanadistricts.com