%0 Journal Article %A R. A. Aleksandryan %A J. Brilla %A S. L. Sobolev %T Seventh Soviet-Czechoslovak Seminar on Applications of Methods of Function Theory and Functional Analysis for Problems of Mathematical Physics %J Trudy Matematicheskogo Instituta imeni V.A. Steklova %D 1982 %V 37 %N 5 %I mathdoc %U http://geodesic.mathdoc.fr/item/RM_1982_37_5_a30/ %G ru %F RM_1982_37_5_a30