M. ARUNKUMAR; JOHN M. RASSIAS; S. MURTHY; M. ARULSELVAN. Stability of a 2 - Variable AC - Mixed Type Functional Equation in Paranormed Spaces: Direct and Fixed Point Methods. International Journal of Mathematics And its Applications, [S. l.], v. 4, n. 4 (Special Issue), p. 43–58, 2016. Disponível em: http://ijmaa.in/index.php/ijmaa/article/view/1419. Acesso em: 18 may. 2024.