%0 Journal Article %T Antiperiodic Boundary Value Problems for Finite Dimensional Differential Systems %A Chen YQ %A O'Regan D %A Wang FL %A Zhou SL %J Boundary Value Problems %D 2009 %I Springer %X We study antiperiodic boundary value problems for semilinear differential and impulsive differential equations in finite dimensional spaces. Several new existence results are obtained. %U http://www.boundaryvalueproblems.com/content/2009/541435