“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 61, no. 9 (September 29, 2020): 2303–2314. Accessed November 22, 2024. https://ijs.uobaghdad.edu.iq/index.php/eijs/article/view/1203.