TY - JOUR AU - G. A. Smolkin TI - On an estimate in the Sobolev space generated by the second order degenerate elliptic operator defined in the half-plane JO - Žurnal Srednevolžskogo matematičeskogo obŝestva PY - 2018 SP - 206 EP - 214 VL - 20 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/SVMO_2018_20_2_a6/ LA - ru ID - SVMO_2018_20_2_a6 ER -