Onwuanyi, N., G. Nwodo, and P. Chima. “The Benin City Moat System: Functional Space Or Urban Void?”. Coou African Journal of Environmental Research, vol. 3, no. 1, Sept. 2022, pp. 21-39, http://ajer.coou.edu.ng/index.php/journal/article/view/120.