%0 Journal Article %A Shapiro, Joel H. %T On the Weak Basis Theorem in F-spaces %J Canadian journal of mathematics %D 1974 %P 1294-1300 %V 26 %N 6 %U http://geodesic.mathdoc.fr/articles/10.4153/CJM-1974-124-5/ %R 10.4153/CJM-1974-124-5 %F 10_4153_CJM_1974_124_5