1. Standards for Irrigation Efficiencies of ICID
2. Bos M. G. and Nugteren J. “On Irrigation Efficiencies ” Publication 10 International Institute for Land Reclamation and Improvement Wageningen The Netherlands 1978.
3. Bos M. G. Clemmens A. J. and Replogle J. A. “ Flow Measuring and Regulating Flumes ” 1983 (in press).
4. Bureau of Census 1969 Census of Agriculture U.S. Department of Commerce U.S. Government Printing Office Washington D.C.
5. Burt C. M. and Lord J. M. Jr. “Demand Theory and Application in Irrigation District Operation ” Proceedings ASCE Specialty Conference on Irrigation Scheduling for Water and Energy Conservation in the 80's Chicago Ill. Dec. 14–15 1981 pp. 150–158.