%0 Journal Article %T Multiple solutions for impulsive semilinear functional and neutral functional differential equations in Hilbert space %A Benchohra M %A Henderson J %A Ntouyas SK %A Ouahab A %J Journal of Inequalities and Applications %D 2005 %I Springer %X The well-known Krasnoselskii twin fixed point theorem is used to investigate the existence of mild solutions for first- and second-order impulsive semilinear functional and neutral functional differential equations in Hilbert spaces. %U http://www.journalofinequalitiesandapplications.com/content/2005/357614