TY  - JOUR
AU  - A. Yu. Savin
AU  - B. Yu. Sternin
TI  - Defect of index in the theory of non-local problems and the $\eta$-invariant
JO  - Sbornik. Mathematics
PY  - 2004
SP  - 1321
EP  - 1358
VL  - 195
IS  - 9
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/SM_2004_195_9_a5/
LA  - en
ID  - SM_2004_195_9_a5
ER  -