Existence of Solution for Four-Point Boundary Value Problems of Second-Order Impulsive Differential Equations (III) Year: 2011 Volume: 5 Issue: 4 640 - 644 Pages Authors: Li Ge Abstract: In this paper, we study the existence of solution of the four-point boundary value problem for second-order differential equations with impulses by using Leray-Schauder theory: Keywords: impulsive differential equations impulsive integraldifferential equation boundary value problems