%0 Journal Article %A S. M. Nikol'skii %T A~variational problem for an equation of elliptic type with degeneration on the boundary %J Trudy Matematicheskogo Instituta imeni V.A. Steklova %D 1979 %P 212-238 %V 150 %I mathdoc %U http://geodesic.mathdoc.fr/item/TM_1979_150_a12/ %G ru %F TM_1979_150_a12