%0 Journal Article %T Joint sessions of the Petrovskii Seminar and the Moscow Mathematical Society %J Trudy Matematicheskogo Instituta imeni V.A. Steklova %D 1984 %V 39 %N 4 %U http://geodesic.mathdoc.fr/item/RM_1984_39_4_a21/ %G ru %F RM_1984_39_4_a21