%0 Journal Article %A S. L. Krupetskii %T Intermediate subgroups in the unitary group over the skew field of quaternions %J Zapiski Nauchnykh Seminarov POMI %D 1982 %P 96-101 %V 116 %I mathdoc %U http://geodesic.mathdoc.fr/item/ZNSL_1982_116_a9/ %G ru %F ZNSL_1982_116_a9