%0 Journal Article %A A. B. Aleksandrov %T A~simple proof of a~theorem of Volberg and Treil' concerning imbeddings for coinvariant subspaces of the shift operator %J Zapiski Nauchnykh Seminarov POMI %D 1994 %P 26-35 %V 217 %I mathdoc %U http://geodesic.mathdoc.fr/item/ZNSL_1994_217_a2/ %G ru %F ZNSL_1994_217_a2