Pramod Kumar, and Dr. V.G.Gupta. “Homotopy Analysis Method to Solve the Multi-Order Fractional Differential Equations”. Global Journals of Research in Engineering 12, no. I1 (January 15, 2012): 17–22. Accessed May 3, 2024. https://engineeringresearch.org/index.php/GJRE/article/view/693.