R. MURALI; V. VITHYA. Generalized Hyers-Ulam Stability of an Additive Functional Equation. International Journal of Mathematics And its Applications, [S. l.], v. 6, n. 1 (Special Issue), p. 55–59, 2018. Disponível em: http://ijmaa.in/index.php/ijmaa/article/view/1395. Acesso em: 2 apr. 2026.