Dutta, Mriganka S., and Helen K. Saikia. “Factorization of a Formal Power Series With Constant Term Certain Power of a Prime”. The Journal of the Indian Mathematical Society 91, no. 3-4 (July 1, 2024): 344–355. Accessed July 22, 2024. https://informaticsjournals.com/index.php/jims/article/view/31941.