TY  - BOOK
AU  - Douglas,Ronald G.
TI  - Banach algebra techniques in operator theory
SN  - 0387983775
U1  - 515.724 
PY  - 1998///
CY  - New York
PB  - Springer-Verlag
KW  - Operator theory
KW  - Banach algebras
KW  - Hilbert space
ER  -