TY  - JOUR
AU  - Kirchev, K.
AU  - Borisova, G.
TI  - Commuting Nonselfadjoint Operators and their Characteristic Operator-Functions
JO  - Serdica Mathematical Journal
PY  - 1997
SP  - 313
EP  - 334
VL  - 23
IS  - 3-4
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/SMJ2_1997_23_3-4_a8/
LA  - en
ID  - SMJ2_1997_23_3-4_a8
ER  -