%0 Journal Article %A B. S. Pavlov %A M. D. Faddeev %T Spectral analysis of unitary perturbations of contractions %J Zapiski Nauchnykh Seminarov POMI %D 1982 %P 215-227 %V 115 %I mathdoc %U http://geodesic.mathdoc.fr/item/ZNSL_1982_115_a17/ %G ru %F ZNSL_1982_115_a17