%0 Journal Article %A M. Altman %T Inverse differentiability contractors and equations in Banach spaces %J Studia Mathematica %D 1973 %P 1-15 %V 46 %N 1 %U http://geodesic.mathdoc.fr/articles/10.4064/sm-46-1-1-15/ %R 10.4064/sm-46-1-1-15 %G en %F 10_4064_sm_46_1_1_15