%0 Journal Article %A Yu. G. Borisovich %T XIII~Voronezh mathematical winter school %J Trudy Matematicheskogo Instituta imeni V.A. Steklova %D 1979 %V 34 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/RM_1979_34_3_a27/ %G ru %F RM_1979_34_3_a27