TY - JOUR AU - V. A. Gurvich TI - Dual cores and influence functions JO - Doklady Akademii Nauk PY - 1997 SP - 18 EP - 22 VL - 352 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DAN_1997_352_1_a3/ LA - ru ID - DAN_1997_352_1_a3 ER -