“Solving Two Dimensional Coupled Burger’s Equations and Sine-Gordon Equation Using El-Zaki Transform-Variational Iteration Method” (2021) Al-Nahrain Journal of Science, 24(2), pp. 41–47. Available at: https://anjs.edu.iq/index.php/anjs/article/view/2390 (Accessed: 22 November 2024).