We investigate the stability problems for the -dimensional mixed-type additive and quadratic functional equation in random normed spaces by applying the fixed point method.
Yang-Hi Lee. Soon-Mo Jung. "Stability of an -Dimensional Mixed-Type Additive and Quadratic Functional Equation in Random Normed Spaces." J. Appl. Math. 2012 1 - 15, 2012. https://doi.org/10.1155/2012/547865