E.Rama, K.Somaiah, and K.Sambaiah. “A Study of Variational Iteration Method for Solving Various Types of Problems”. Malaya Journal of Matematik 9, no. 01 (January 1, 2021): 701–708. Accessed November 22, 2024. https://www.malayajournal.org/index.php/mjm/article/view/1116.