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“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: Nov. 23, 2024. [Online]. Available:
https://www.ejpam.com/index.php/ejpam/article/view/854