TY  - JOUR
AU  - B. V. Fedosov
TI  - An analytic formula for the index of an elliptic boundary-value problem
JO  - Sbornik. Mathematics
PY  - 1974
SP  - 61
EP  - 90
VL  - 22
IS  - 1
UR  - http://geodesic.mathdoc.fr/item/SM_1974_22_1_a4/
LA  - en
ID  - SM_1974_22_1_a4
ER  -