@article{10_4064_sm159_1_6,
     author = {G. Godefroy and N. J. Kalton},
     title = {Lipschitz-free {Banach} spaces},
     journal = {Studia Mathematica},
     pages = {121--141},
     year = {2003},
     volume = {159},
     number = {1},
     doi = {10.4064/sm159-1-6},
     language = {de},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/sm159-1-6/}
}