[1]
M. Arunkumar, E. Sathya, and 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., vol. 5, no. 01, pp. 4–18, Jan. 2017.