%0 Journal Article %A Bermudo, S. %A Mancera, C. H. %A Paúl, P. J. %A Vasyunin, V. %T Quasi-similarity of contractions having a 2×1 characteristic function. %J Revista matemática iberoamericana %D 2007 %P 677-704 %V 23 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/RMI_2007_2007_1_a25/ %G en %F RMI_2007_2007_1_a25