@article{10_4064_cm_44_1_105_109,
     author = {J. Elton and E. Odell},
     title = {The unit ball of every infinite-dimensional normed linear space contains a (1+{\varepsilon})-separated sequence},
     journal = {Colloquium Mathematicum},
     pages = {105--109},
     publisher = {mathdoc},
     volume = {44},
     number = {1},
     year = {1981},
     doi = {10.4064/cm-44-1-105-109},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/cm-44-1-105-109/}
}