%0 Journal Article %A V. V. Kapustin %T Almost isometric operators: a function model, invariant subspaces, the~commutant %J Zapiski Nauchnykh Seminarov POMI %D 1992 %P 95-116 %V 201 %I mathdoc %U http://geodesic.mathdoc.fr/item/ZNSL_1992_201_a2/ %G ru %F ZNSL_1992_201_a2