Shehu, MD, OP Evans, and AT Cole. “Prey – Predator Model on the Interaction Between the Drawdown Level of an Aquifer and Maize Yield”. Journal of Applied Sciences and Environmental Management 20, no. 4 (February 1, 2017): 911–916. Accessed August 24, 2026. https://www.ajol.info/index.php/jasem/article/view/150868.