@article{10_4064_sm_57_2_147_190,
     author = {N. Aronszajn},
     title = {Differentiability of {Lipschitzian} mappings between {Banach} spaces},
     journal = {Studia Mathematica},
     pages = {147--190},
     publisher = {mathdoc},
     volume = {57},
     number = {2},
     year = {1976},
     doi = {10.4064/sm-57-2-147-190},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/sm-57-2-147-190/}
}