@article{10_4064_sm_46_2_101_110,
     author = {M. Altman},
     title = {Directional contractors and equations in {Banach} spaces},
     journal = {Studia Mathematica},
     pages = {101--110},
     publisher = {mathdoc},
     volume = {46},
     number = {2},
     year = {1973},
     doi = {10.4064/sm-46-2-101-110},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/sm-46-2-101-110/}
}