%0 Journal Article %A Klaus Deimling %T Periodic Solutions of Differential Equations in Banach Spaces. %J Manuscripta mathematica %D 1978 %P 31-44 %V 24 %I mathdoc %U http://geodesic.mathdoc.fr/item/MM2_1978__24_154533/ %F MM2_1978__24_154533