@article{10_4064_sm_46_1_1_15,
     author = {M. Altman},
     title = {Inverse differentiability contractors and equations in {Banach} spaces},
     journal = {Studia Mathematica},
     pages = {1--15},
     year = {1973},
     volume = {46},
     number = {1},
     doi = {10.4064/sm-46-1-1-15},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/sm-46-1-1-15/}
}