M. Arunkumar, E. Sathya, S. Ramamoorthi. General solution and generalized Ulam - Hyers stability of a additive functional equation originating from N observations of an arithmetic mean in Banach spaces using various substitutions in two different approaches. Malaya J. Mat. [Internet]. 2017 Jan. 1 [cited 2024 Nov. 24];5(01):4-18. Available from: https://www.malayajournal.org/index.php/mjm/article/view/578