TY - JOUR AU - A. B. Antonevich TI - Boundary value problems with strong nonlocalness for elliptic equations JO - Izvestiya. Mathematics PY - 1990 SP - 1 EP - 21 VL - 34 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/IM2_1990_34_1_a0/ LA - en ID - IM2_1990_34_1_a0 ER -