%0 Journal Article %A V. V. Kapustin %T One-dimensional perturbations of singular unitary operators %J Zapiski Nauchnykh Seminarov POMI %D 1996 %P 118-122 %V 232 %I mathdoc %U http://geodesic.mathdoc.fr/item/ZNSL_1996_232_a8/ %G ru %F ZNSL_1996_232_a8