Shailly Mahajan, Subash Kumar, and Arun Kumar Tomer. “Comparison in Between Differential Transformation Method and Power Series Method for $13^{th}$ Order Differential Equation With Boundary Value Problems”. International Journal of Mathematics And its Applications 6, no. 1 - D (March 1, 2018): 629–634. Accessed July 3, 2024. https://ijmaa.in/index.php/ijmaa/article/view/1120.