%0 Journal Article %A J. Elton %A E. Odell %T The unit ball of every infinite-dimensional normed linear space contains a (1+ɛ)-separated sequence %J Colloquium Mathematicum %D 1981 %P 105-109 %V 44 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/cm-44-1-105-109/ %R 10.4064/cm-44-1-105-109 %G en %F 10_4064_cm_44_1_105_109