%0 Journal Article %A V. Lakshmikantham %A A. R. Mitchell %A R. W. Mitchell %T On the existence of solutions of differential equations of retarded type in a Banach space %J Annales Polonici Mathematici %D 1977 %P 253-260 %V 35 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/ap-35-3-253-260/ %R 10.4064/ap-35-3-253-260 %G en %F 10_4064_ap_35_3_253_260