Karthikeyan S, Rassias JM, Vijayakumar S, Sakthivel K. Stability Results of Additive-Quadratic \(n\)-Dimensional Functional Equation: Fixed Point Approach. Comm. Math. Appl. [Internet]. 2022 Aug. 15 [cited 2024 May 3];13(2):461-76. Available from: http://www.rgnpublications.com/journals/index.php/cma/article/view/1757