TY  - JOUR
AU  - V. E. Slyusarchuk
TI  - Estimates of the spectra and the invertibility of functional operators
JO  - Sbornik. Mathematics
PY  - 1978
SP  - 243
EP  - 258
VL  - 34
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/SM_1978_34_2_a7/
LA  - en
ID  - SM_1978_34_2_a7
ER  -