%0 Journal Article %A J. Johnson %T Extreme points in tensor products and a theorem of de Leeuw %J Studia Mathematica %D 1970 %P 159-162 %V 37 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/sm-37-2-159-162/ %R 10.4064/sm-37-2-159-162 %G en %F 10_4064_sm_37_2_159_162