Krishnaswamy Iangar, S. “The Series &#8721;{n<sup>p</sup>/&#8970;N}”. The Journal of the Indian Mathematical Society 5, no. 5 (October 1, 1913): 178–179. Accessed May 5, 2024. http://informaticsjournals.com/index.php/jims/article/view/17726.