Ali Al-Hawasy, Jamil, & Eman H. Al-Rawdanee. " Numerical Solution for Classical Optimal Control Problem Governing by Hyperbolic Partial Differential Equation via Galerkin Finite Element-Implicit method with Gradient Projection Method." Ibn AL- Haitham Journal For Pure and Applied Science [Online], 32.2 (2019): 71-80. Web. 19 Jul. 2019