NARANIENGAR, M. T. On Factors. The Journal of the Indian Mathematical Society, [S. l.], v. 5, n. 6, p. 220–221, 1913. DOI: 10.18311/jims/1913/17722. Disponível em: https://www.informaticsjournals.com/index.php/jims/article/view/17722. Acesso em: 5 may. 2024.