Abbo, Bakari, Youssouf Pare, Bassono Francis, Marayi Choroma, and Blaise Some. 2013. “Application of the SBA Method to Solving Optimal Control Problem Governed by Systems of Nonlinear Partial Differential Equations”. International Journal of Advanced Mathematical Sciences 1 (4): 180-84. https://doi.org/10.14419/ijams.v1i4.1274.