“Generalized Ulam-Hyers Stability of a General Mixed AQCQ-functional Equation in Multi-Banach Spaces: a Fixed Point Approach”, Eur. J. Pure Appl. Math., vol. 3, no. 6, pp. 1032–1047, Dec. 2010, Accessed: Apr. 28, 2024. [Online]. Available: https://ejpam.com/index.php/ejpam/article/view/854