%0 Journal Article %A Edelstein, M. %T Lines and Hyperplanes associated with Families of Closed and Bounded Sets in Conjugate Banach Spaces %J Canadian journal of mathematics %D 1970 %P 933-938 %V 22 %N 5 %U http://geodesic.mathdoc.fr/articles/10.4153/CJM-1970-107-3/ %R 10.4153/CJM-1970-107-3 %F 10_4153_CJM_1970_107_3