R. Murali, M. Boobalan, and A.Antony Raj. “Stability of Quintic Functional Equation in 2-Banach Space”. International Journal of Mathematics And its Applications 4, no. 1 - D (March 15, 2016): 41–46. Accessed May 19, 2024. http://ijmaa.in/index.php/ijmaa/article/view/615.