TY  - BOOK
AU  - Bonsall, F. F.
AU  - Duncan, J.
TI  - NUMERICAL RANGES OF OPERATORS ON NORMED SPACES AND OF ELEMENTS OF NORMED ALGEBRAS
U1  - 517.6 
PY  - 1971///
CY  - Cambridge
PB  - University Press
KW  - Numerical Functions
KW  - Normed Linear Spaces
ER  -