G. BALASUBRAMANIYAN; V. GOVINDAN; C. MUTHAMILARASI. General Solution and Stability of Quadratic Functional Equation. International Journal of Mathematics And its Applications, [S. l.], v. 5, n. 2 - A, p. 13–16, 2017. Disponível em: https://ijmaa.in/index.php/ijmaa/article/view/791. Acesso em: 3 jul. 2024.