GANAPATHY IYER, V. On a Functional Equation (III). The Journal of the Indian Mathematical Society, [S. l.], v. 26, n. 1-2, p. 69–75, 1962. DOI: 10.18311/jims/1962/16881. Disponível em: https://www.informaticsjournals.com/index.php/jims/article/view/16881. Acesso em: 6 may. 2024.