... IntroductionThird-order differential equations arise in a variety of different areas of applied mathematicsand physics, for example, in the deflection of a curved beam having a constant or varyingcross ... Boundary Value Problems23 X. Zhang, M. Feng, and W. Ge, “Existence result of second-order differential equations with integralboundary conditions at resonance,” Journal of Mathematical Analysis ... solutions for a class of boundary-value problem with integralboundary conditions in Banach spaces,” Journal of Computational and Applied Mathematics, vol. 222, no.2, pp. 351–363, 2008.22 L. Kong,...