TY - JOUR AU - A. I. Ibragimov TI - On some qualitative properties of solutions of elliptic equations with continuous coefficients JO - Sbornik. Mathematics PY - 1984 SP - 447 EP - 460 VL - 49 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/SM_1984_49_2_a10/ LA - en ID - SM_1984_49_2_a10 ER -