B. C. Dhage, S. B. Dhage, and S. K. Ntouyas. “Approximating Solutions of Nonlinear Second Order Ordinary Differential Equations via Dhage Iteration Principle”. Malaya Journal of Matematik 4, no. 01 (January 1, 2016): 8–18. Accessed November 24, 2024. https://www.malayajournal.org/index.php/mjm/article/view/507.