TY - JOUR AU - V. A. Kolyvagin TI - Formal groups and the norm residue symbol JO - Izvestiya. Mathematics PY - 1980 SP - 289 EP - 348 VL - 15 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/IM2_1980_15_2_a4/ LA - en ID - IM2_1980_15_2_a4 ER -