Al-Hawasy JA, Jawad MA. Approximation Solution of Nonlinear Parabolic Partial Differential Equation via Mixed Galerkin Finite Elements Method with the Crank-Nicolson Scheme. Iraqi Journal of Science. 2019;60(2):353-361. Accessed December 8, 2025. https://www.ijs.uobaghdad.edu.iq/index.php/eijs/article/view/602