Bhargava, S. “Some Series Inversions Akin to Ramanujan’s Inversion Formulas for the Lemniscate Function”. The Journal of the Indian Mathematical Society 57, no. 1-4 (December 1, 1991): 35–44. Accessed May 2, 2024. https://informaticsjournals.com/index.php/jims/article/view/21893.