%0 Journal Article %A DAUGHTRY, JOHN %A WEINSTOCK, BARNET %T EXTREME POINTS OF CERTAIN BANACH SPACES RELATED TO CONDITIONAL EXPECTATIONS %J Glasgow mathematical journal %D 2004 %P 29-36 %V 46 %N 1 %U http://geodesic.mathdoc.fr/articles/10.1017/S0017089503001678/ %R 10.1017/S0017089503001678 %F 10_1017_S0017089503001678