@article{10_4064_fm199_3_4,
     author = {N. J. Kalton and G. Lancien},
     title = {Best constants for {Lipschitz} embeddings of
 metric spaces into $c_0$},
     journal = {Fundamenta Mathematicae},
     pages = {249--272},
     publisher = {mathdoc},
     volume = {199},
     number = {3},
     year = {2008},
     doi = {10.4064/fm199-3-4},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/fm199-3-4/}
}