References
- Chan , C. F. 1989 . Some more on a conjecture of marcus and wang . Linear and Multilinear Algebra , 25 : 231 – 235 .
- Chan , C. F. 1989 . The generalized numerical radius associated with a positive semi-definite function . To appear in Linear and Multilinear Algebra , 25
- Choi , M. D. 1987 . On the congruence numerical range and related functions of matrices . Linear and Multilinear Algebra , 22 : l – 5 .
- Hu , S. A. 1987 . On thc Marcus-Wang conjecture . Linear and Multilinear Algebra , 20 : 191 – 196 .
- Johnson , C. R. and Horn , R. A. 1990 . Matrix Analysis , Cambridge University Press .
- Marcus , M. and Wang , B. Y. 1980 . Some variations on the numerical range . Linear and Multilinear Algebra , 9 : 111 – 120 .
- Tam , T. Y. 1985 . Note on a paper of Thompson: The congruence numerical range . Linear and Multilinear Algebra , 17 : 107 – 115 .
- Thompson , R. C. 1980 . The congruence numerical range . Linear and Multilinear Algebra , 8 : 197 – 206 .
- Thompson , R. C. 1979 . Singular values and diagonal elements of complex symmetric matrices . Linear Algebra and Its Applications , 26 : 65 – 106 .
- Youla , D. C. 1961 . A normal form for a matrix under the unitary group . Canad. J. Math. , 13 : 694 – 704 .