R. MURALI; A. ANTONY RAJ; M. BOOBALAN. Hyers-Ulam Stability of Quartic Functional Equation in Matrix Paranormed Spaces. International Journal of Mathematics And its Applications, [S. l.], v. 4, n. 1 - B, p. 81–86, 2016. Disponível em: http://ijmaa.in/index.php/ijmaa/article/view/571. Acesso em: 19 may. 2024.