1. Solomon. Bekure, 1971 . An economic analysis of the intertemporal allocation of ground water in the central Ogallala Formation . Ph.D. thesis , Oklahoma State University.
2. David D. Henderson, 1979 . Analysis of the economic life of the irrigation water supply in the Oklahoma Panhandle . M.S. thesis , Oklahoma State University.
3. High Plains Associates . 1979 . Interim report, six-state High Plains-Ogallala Aquifer area study. Prepared for U.S. Department of Commerce, Econ. Devel. Admin.
4. Darrel D. Kletke, 1975 . Operations manual for the Oklahoma State University enterprise budget generator. Oklahoma State University, Res. Report P-719 .
5. Darrel D. Kletke, R. Harris Thomas, P. Harry, and Mapp, 1978 . Irrigation cost program user's reference manual. Oklahoma State University, Res. Report P-770 .