X Zhao, X Zhang, W Ge - Bulletin of the Malaysian Mathematical Sciences …, 2017 - Springer
In this paper, we study the Hyers–Ulam–Rassias stability and Hyers–Ulam stability for a
class second differential equation y''(x)+ p (x) y'(x)+ q (x) y (x)= F (y (x)) y′′(x)+ p (x) …