TY - JOUR AU - M. S. Agranovich TI - On the problem of the index of elliptic operators JO - Doklady Akademii Nauk PY - 1962 SP - 983 EP - 985 VL - 142 IS - 5 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DAN_1962_142_5_a0/ LA - ru ID - DAN_1962_142_5_a0 ER -