1. Guidelines for Predicting Crop Water Requirements;Doorenbos,1975
2. Wheat;Fischer,1983
3. Physiological limitations to producing wheat in semitropical and tropical environments and possible selection criteria;Fischer,1985
4. Number of kernels in wheat crops and the influence of solar radiation and temperature;Fishcer;J. Agric. Sci., Cambr.,1985
5. Estimating potential evapotranspiration;Hargreaves;J. Irrig. Drain. Div. ASCE,1982