Mixed Implicit Galerkin – Frank Wolf, Gradient and Gradient Projection Methods for Solving Classical Optimal Control Problem Governed by Variable Coefficients, Linear Hyperbolic, Boundary Value Problem. Iraqi Journal of Science [Internet]. 2020 Sep. 29 [cited 2024 May 3];61(9):2303-14. Available from: https://ijs.uobaghdad.edu.iq/index.php/eijs/article/view/1203