TY - JOUR AU - B. V. Fedosov TI - An analytic formula for the index of an elliptic boundary-value problem.~II JO - Sbornik. Mathematics PY - 1974 SP - 511 EP - 535 VL - 24 IS - 4 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/SM_1974_24_4_a3/ LA - en ID - SM_1974_24_4_a3 ER -