Every reference with a DOI in the deposited reference list resolved to a known
work in Crossref or DataCite at the dated check, and none carried a retraction,
withdrawal, or removal notice.
The 14 references without a DOI — listed, not checked
no DOI — not checkedAl-Besher, A., Helweg, O.J., 1986. Optimal crop inputs by quadratic programming. In: Ninth Symposium on the Biological Aspects of Saudi Arabia. King Saud University, Riyadh, KSA, 24–27 March 1986, pp. 18–25.
no DOI — not checkedAllen, G.R., Pereira, S.L., Raes, D., Smith, M., 1998. Crop evapotranspiration. Guidelines for computing crop water requirements. FAO Irrigation and Drainage Paper 56, Rome.
no DOI — not checkedAnonymous 2000. Minitab Inc. User’s Guide, Release 13 for Windows.
no DOI — not checkedBenli, B., Selli, F., Kodal, S., 2001. Crop pattern optimization with adequate and limited water supply at small-scale farms in GAP-Tahilalan irrigation district. In: Proceeding of the Second GAP, Agricultural Congress, Urfa, 24–26 October 2001 (in Turkish).
no DOI — not checkedDoorenbos, J., Kassam, A.H., 1979. Yield response to water. FAO Irrigation and Drainage Paper 33, Rome, 1979.
no DOI — not checkedDoorenbos, J., Pruitt, W.O., 1977. Guidelines for predicting crop water requirements. FAO Irrigation and Drainage Paper 24, Rome, 1977.
no DOI — not checkedHillier, F., Lieberman, G., 1980. Introduction to operations research. Holden-Day Inc., San Francisco, CA.
no DOI — not checkedIsraelsen, O.W., Hansen, V.E., 1962. Irrigation Principles and Practices. Wiley, Utah State University, Logan, UT.
no DOI — not checkedKodal, S., 1996. Irrigation scheduling, farm optimization and optimum water distribution with adequate and limited water supply in Ankara-Beypazari ecology. Faculty of Agriculture, Ankara University, no. 1465, Ankara (in Turkish).
no DOI — not checkedMatanga, G.B., Marino, M.A., 1977. Application of optimization and simulation techniques to irrigation management. Paper 5003, Department of Water Science and Engineering, University of California, Davis, CA.
no DOI — not checkedRaes, D., Lemmens, H., Van Aelst, P., Bulcke, M.V., Smith, M., 1988. IRSIS. Irrigation Scheduling Information System, vol. 1. Katholieke Universiteit Leuven, Belgium (version 4.01).
no DOI — not checkedRagsdale, C.T., 1998. Spreadsheet Modeling and Decision Analysis. A Practical Introduction to Management Science. South-Western College Publication, Cincinnati, OH, 1998.
no DOI — not checkedSelli, F., 1996. A research on the determination of optimal farm organisation and the sufficient income farm size in the middle district of Sanlýurfa. General Directoraite of Rural Services of Turkey. Research, Planning and Coordination Department, Land and Water Resources Department Research annual, Ankara.
no DOI — not checkedSonmez, N., Benli, E., 1976. Linear programming as a means in project evaluation and application to the Alpu irrigation project. Faculty of Agriculture, University, no. 25, Ankara.
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