GROSS, F. On some Functional Equations of Iyer. The Journal of the Indian Mathematical Society, [S. l.], v. 32, n. 3-4, p. 221–227, 1968. DOI: 10.18311/jims/1968/16771. Disponível em: https://informaticsjournals.com/index.php/jims/article/view/16771. Acesso em: 18 jul. 2024.