V. GOVINDAN; K. TAMILVANAN. Stability of Functional Equation in Banach Space: Using Two Different Methods. International Journal of Mathematics And its Applications, [S. l.], v. 6, n. 1 - C, p. 527–536, 2018. Disponível em: https://ijmaa.in/index.php/ijmaa/article/view/1098. Acesso em: 3 jul. 2024.