%0 Journal Article %A Vladimir L. Popov %T Orbit Closures of the Witt Group Actions %J Trudy Matematicheskogo Instituta imeni V.A. Steklova %D 2019 %P 212-216 %V 307 %I mathdoc %U http://geodesic.mathdoc.fr/item/TM_2019_307_a10/ %G ru %F TM_2019_307_a10