S. Murthy, V. Govindhan, and M. Sree Shanmuga Velan. 2017. “Generalized U - H Stability of New N - Type of Additive Quartic Functional Equation in Non - Archimedean Orthogonally Space”. International Journal of Mathematics And Its Applications 5 (2 - A):1-11. https://ijmaa.in/index.php/ijmaa/article/view/790.