TY  - JOUR
AU  - V. G. Zvyagin
TI  - The zero point index of a completely continuous perturbation of a Fredholm mapping that commutes with the action of a torus
JO  - Izvestiâ vysših učebnyh zavedenij. Matematika
PY  - 1997
SP  - 47
EP  - 55
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/IVM_1997_2_a3/
LA  - ru
ID  - IVM_1997_2_a3
ER  -