%0 Journal Article %A G. A. Smolkin %T On an estimate in the Sobolev space generated by the second order degenerate elliptic operator defined in the half-plane %J Žurnal Srednevolžskogo matematičeskogo obŝestva %D 2018 %P 206-214 %V 20 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/SVMO_2018_20_2_a6/ %G ru %F SVMO_2018_20_2_a6