Umamaheshwar Rao R., Yuvaraju Namala. “Tautochrone Problem by Elzaki Transform Technique ”. International Journal of Advanced Science and Technology 29, no. 3 (March 30, 2020): 14666 -. Accessed July 24, 2024. https://sersc.org/journals/index.php/IJAST/article/view/31953.