Afolabi, A. S., and A. A. Oyewale. “On the Solutions of Optimal Control Problems Constrained by Ordinary Differential Equations With Vector-Matrix Coefficients Using FICO Xpress Mosel”. International Journal of Mathematical Sciences and Optimization: Theory and Applications, Vol. 11, no. 2, July 2025, pp. 111 -32, https://ijmso.unilag.edu.ng/article/view/2898.