“Generalized Hyers-Ulam Stability of a System of Bi-Reciprocal Functional Equations”, Eur. J. Pure Appl. Math., vol. 8, no. 2, pp. 283–293, Apr. 2015, Accessed: Apr. 27, 2024. [Online]. Available: https://ejpam.com/index.php/ejpam/article/view/2337