Sarpong, S. A., D. Asare-Kyei, F. Addae, and D. M. Yanchira. “Variability of Maize Prices in Ghana: A Generalized Additive Mixed Model Approach: Variability of Maize Prices in Ghana: A Generalized Additive Mixed Model Approach”. International Journal of Innovation and Development, vol. 4, no. 1, June 2026, pp. 43-57, https://ijid.kstu.edu.gh/index.php/ijid/article/view/53.