Gürbüz, Burcu, and Mehmet Sezer. “Modified Operational Matrix Method for Second-Order Nonlinear Ordinary Differential Equations With Quadratic and Cubic Terms”. An International Journal of Optimization and Control: Theories & Applications (IJOCTA) 10, no. 2 (July 1, 2020): 218–225. Accessed April 30, 2025. https://www.ijocta.org/index.php/files/article/view/827.