TY  - JOUR
AU  - A. G. Baskakov
TI  - Spectral analysis of differential operators with unbounded operator-valued coefficients, difference relations and semigroups of difference relations
JO  - Izvestiya. Mathematics 
PY  - 2009
SP  - 215
EP  - 278
VL  - 73
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/IM2_2009_73_2_a0/
LA  - en
ID  - IM2_2009_73_2_a0
ER  -