TY - JOUR AU - E. M. Landis AU - N. S. Nadirashvili TI - Positive solutions of second order elliptic equations in unbounded domains JO - Sbornik. Mathematics PY - 1986 SP - 129 EP - 134 VL - 54 IS - 1 UR - http://geodesic.mathdoc.fr/item/SM_1986_54_1_a6/ LA - en ID - SM_1986_54_1_a6 ER -