TY  - BOOK
AU  - Gustafson, Karl E. 
AU  -  Rao, Duggirala K.M.
TI  - Numerical range : the field of values of linear operators and matrices
SN  -  038794835X 
U1  - 515.7246 
PY  - 1997///
CY  - New York
PB  - Springer
KW  - Mathematics ; Analysis
ER  -