%0 Journal Article %A S. Szarek %T Computing summing norms and type constants on few vectors %J Studia Mathematica %D 1991 %P 147-156 %V 98 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/sm-98-2-147-156/ %R 10.4064/sm-98-2-147-156 %G en %F 10_4064_sm_98_2_147_156