@article{10_4064_sm190_2_4,
     author = {Anna Maria Pelczar},
     title = {Note on distortion and {Bourgain} $\ell _1$-index},
     journal = {Studia Mathematica},
     pages = {147--161},
     year = {2009},
     volume = {190},
     number = {2},
     doi = {10.4064/sm190-2-4},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/sm190-2-4/}
}