@article{10_4064_cm_44_2_301_307,
     author = {J. E. Valentine and S. G. Wayment},
     title = {A local metric characterization of {Banach} spaces},
     journal = {Colloquium Mathematicum},
     pages = {301--307},
     publisher = {mathdoc},
     volume = {44},
     number = {2},
     year = {1981},
     doi = {10.4064/cm-44-2-301-307},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/cm-44-2-301-307/}
}