@article{MZ_1951__55_169257,
     author = {Ky Fan},
     title = {Note on a {Theorem} of {Banach.}},
     journal = {Mathematische Zeitschrift},
     pages = {308--309},
     publisher = {mathdoc},
     volume = {55},
     year = {1951},
     zbl = {0047.28505},
     url = {http://geodesic.mathdoc.fr/item/MZ_1951__55_169257/}
}