%0 Journal Article %A Hughes, N. J. S. %T Steinitz' exchange theorem for infinite bases %J Compositio Mathematica %D 1962-1964 %P 113-118 %V 15 %I Kraus Reprint %U http://www.numdam.org/item/CM_1962-1964__15__113_0/ %G en %F CM_1962-1964__15__113_0