Saghir, Muhammad Zain. “Convergence Characteristics of Variational Iteration Method on Ordinary Differential Equations: Theory and Applications”.
Journal of Mathematical Techniques in Modeling 1, no. 2 (October 10, 2024): 1–15. Accessed July 16, 2025.
https://www.ufpub.com/index.php/jmtm/article/view/32.