%0 Journal Article %A S. L. Krupetskii %T On subgroups of unitary group over a~diadic local field %J Zapiski Nauchnykh Seminarov POMI %D 1980 %P 79-89 %V 103 %I mathdoc %U http://geodesic.mathdoc.fr/item/ZNSL_1980_103_a10/ %G ru %F ZNSL_1980_103_a10