TY - JOUR AU - A. V. Borodin TI - A certain estimate for elliptic equations and its application to loaded equations JO - Differencialʹnye uravneniâ PY - 1977 SP - 17 EP - 22 VL - 13 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DE_1977_13_1_a2/ LA - ru ID - DE_1977_13_1_a2 ER -