TY - JOUR AU - M. Altman TI - Inverse differentiability contractors and equations in Banach spaces JO - Studia Mathematica PY - 1973 SP - 1 EP - 15 VL - 46 IS - 1 UR - http://geodesic.mathdoc.fr/articles/10.4064/sm-46-1-1-15/ DO - 10.4064/sm-46-1-1-15 LA - en ID - 10_4064_sm_46_1_1_15 ER -