SIVARAMAKRISHNAN, R. Generalization of an Arithmetic Function. The Journal of the Indian Mathematical Society, [S. l.], v. 33, n. 2-4, p. 127–132, 1969. DOI: 10.18311/jims/1969/16752. Disponível em: https://www.informaticsjournals.com/index.php/jims/article/view/16752. Acesso em: 2 may. 2024.