TY - JOUR AU - V. A. Lebedev TI - Certain properties of an elliptic problem of Sobolev JO - Differencialʹnye uravneniâ PY - 1977 SP - 758 EP - 760 VL - 13 IS - 4 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DE_1977_13_4_a24/ LA - ru ID - DE_1977_13_4_a24 ER -