Electronic Journal of Differential Equations, Vol. 2005(2005), No. 06, pp. 1-10. Title: Existence results for nonlinear boundary-value problems with integral boundary conditions Authors: Abdelkader Belarbi (Univ. de Sidi Bel Abbes, Algerie) Mouffak Benchohra (Univ. de Sidi Bel Abbes, Algerie) Abstract: In this paper, we investigate the existence of solutions for a second order nonlinear boundary-value problem with integral boundary conditions. By using suitable fixed point theorems, we study the cases when the right hand side has convex and nonconvex values. Submitted July 19, 2004. Published January 4, 2005. Math Subject Classifications: 34A60, 34B15. Key Words: Nonlinear boundary-value problem; integral boundary conditions; contraction; fixed point.