%0 Journal Article %A V. P. Fedotov %T Structures generated by invariants %J Zapiski Nauchnykh Seminarov POMI %D 1979 %P 83-92 %V 83 %I mathdoc %U http://geodesic.mathdoc.fr/item/ZNSL_1979_83_a4/ %G ru %F ZNSL_1979_83_a4