%0 Journal Article %A To, Ting-On %T On the Hahn-Banach Extension Property %J Canadian mathematical bulletin %D 1970 %P 9-13 %V 13 %N 1 %U http://geodesic.mathdoc.fr/articles/10.4153/CMB-1970-002-4/ %R 10.4153/CMB-1970-002-4 %F 10_4153_CMB_1970_002_4