%0 Journal Article %A Anna Maria Pelczar %T Note on distortion and Bourgain $\ell _1$-index %J Studia Mathematica %D 2009 %P 147-161 %V 190 %N 2 %U http://geodesic.mathdoc.fr/articles/10.4064/sm190-2-4/ %R 10.4064/sm190-2-4 %G en %F 10_4064_sm190_2_4