References
- Ahlfors , L. 1979 . Complex Analysis , London,Singapore,Tokyo : McGraw Hill . third
- Leal Duarte , A. J. E. 1993 . O Teorema de tarski e suas appicaçöes em teoria de matrizes . Universidade de Coimbra ,
- Li , C. K. , Mehta , P. P. and Rodman , L. 1993 . A generalized numerical range of a constrained sesquilinear form Linear and Multilinear Algebra , to appear
- Nakazato , H. , Nishikawa , Y. and Takaguchi , M. 1993 . On the boundary of the c-numerical range of a matrix . Linear and Multilinear Algebra , to appear
- Roberts , A. W. and Varberg , D. E. 1973 . Complex Functions , New York, San Francisco, London : Academic Press .
- Tsing , N. K. 1984 . The constrained bilinear form and the C-numerical range . Linear Algebra Appl. , 56 : 195 – 206 .