NARAYANA AIYAR, S. Some Theorems in Summation. The Journal of the Indian Mathematical Society, [S. l.], v. 5, n. 5, p. 183–186, 1913. DOI: 10.18311/jims/1913/17728. Disponível em: https://www.informaticsjournals.com/index.php/jims/article/view/17728. Acesso em: 6 may. 2024.