“Approximation Solution of Nonlinear Parabolic Partial Differential Equation via Mixed Galerkin Finite Elements Method with the Crank-Nicolson Scheme”, Iraqi Journal of Science, vol. 60, no. 2, pp. 353–361, Feb. 2019, Accessed: Jul. 05, 2024. [Online]. Available: https://ijs.uobaghdad.edu.iq/index.php/eijs/article/view/602