“Generalized Ulam-Hyers Stability of a General Mixed AQCQ-Functional Equation in Multi-Banach Spaces: A Fixed Point Approach”. European Journal of Pure and Applied Mathematics 3, no. 6 (December 31, 2010): 1032–1047. Accessed April 28, 2024. https://ejpam.com/index.php/ejpam/article/view/854.