%0 Journal Article %A N. Gordeev %A U. Rehmann %T Double cosets of stabilizers of totally isotropic subspaces in a~special unitary group~I %J Zapiski Nauchnykh Seminarov POMI %D 2016 %P 86-107 %V 452 %I mathdoc %U http://geodesic.mathdoc.fr/item/ZNSL_2016_452_a4/ %G en %F ZNSL_2016_452_a4