Igbadun, H.E., O.J. Mudiare, and A. Ahmed. 2001. “Performance Evaluation of Selected Crop Yield-Water Use Models for Wheat Crop”. ARID ZONE JOURNAL OF ENGINEERING, TECHNOLOGY AND ENVIRONMENT 1 (October), 7-16. https://azojete.com.ng/index.php/azojete/article/view/292.