Ali Al-Hawasy, Jamil, AND 		Al-Rawdanee, Eman.
" Numerical Solution for Classical Optimal Control Problem Governing by Hyperbolic Partial Differential Equation via Galerkin Finite Element-Implicit method with Gradient Projection Method" <em>Ibn AL- Haitham Journal For Pure and Applied Sciences</em> [Online], Volume 32 Number 2 (20 May 2019)