TY  - BOOK
AU  - Douglas,Ronald G.
TI  - Banach algebra techniques in operator theory
T2  - Pure and applied mathematics; a series of monographs and textbooks
SN  - 0122213505
PY  - 1972///
CY  - New York
PB  - Academic Press
KW  - Operator theory
KW  - Banach algebras
KW  - Hilbert space
ER  -