%0 Journal Article %A Bolotnikov, Vladimir %A Li, Chi-Kwong %A Rodman, Leiba %T Minimal distortion problems for classes of unitary matrices %J The electronic journal of linear algebra %D 2001 %P 26-46 %V 8 %I mathdoc %U http://geodesic.mathdoc.fr/item/ELA_2001__8__a9/ %G en %F ELA_2001__8__a9