1. Crop coefficients of some major crops of the Nigerian semi-arid tropics;Abdulmumin;Agric. Water Manag.,1990
2. Evaluation of a soil water balance model for the analysis of agricultural drought in the Sahel;Agnew,1991
3. Crop evapotranspiration: guidelines for computing crop water requirements;Allen,1998
4. The start of the growing season in Northern Nigeria;Benoit;Agric. Meteorol.,1977
5. Modelling with limited data: “plausibility” as a measure of model reliability;Carter,2002