%0 Journal Article %A A. M. Zamorzaev %T All-Union Symposium on Symmetry Theory and its Generalizations %J Trudy Matematicheskogo Instituta imeni V.A. Steklova %D 1981 %V 36 %N 5 %I mathdoc %U http://geodesic.mathdoc.fr/item/RM_1981_36_5_a33/ %G ru %F RM_1981_36_5_a33