John M. Rassias, M. Arunkumar, N. Mahesh Kumar. General solution and generalized Ulam-Hyers stability of a generalized 3-Dimensional AQCQ functional equation. Malaya J. Mat. [Internet]. 2017 Jan. 1 [cited 2024 Jul. 4];5(01):149-85. Available from: https://www.malayajournal.org/index.php/mjm/article/view/587