[1] Aghamollaei, Gh., Avizeh, N. and Jahanshahi, Y., 2013. Generalized numerical ranges of matrix polynomials. Bull. Iranian Math. Soc., 39(5), pp. 789-803. DOI:not available
[2] Chein, M., Nakazato, H. and Psarrakos, P., 2006. The q-numerical range and the DavisWielandt shell of reducible 3 × 3 matrices. Linear Multilinear Algebra, 54(2), pp. 79-112. DOI:
10.1080/00036810500148994
[3] Horn, R. A., and Johnson, C. R., 2012. Matrix analysis . Cambridge University Press, 2nd edition, .
[4] Li, C. K., Mehta, P. P., and Rodman, L., 1994. A generalized numerical range: the range
of a constrained sesquilinear form. Linear Multilinear Algebra, 37(1-3), pp. 25-49. DOI:
10.1080/03081089408818311
[5] Marcus, M., and Andersen, P., 1977. Constrained extrema of bilinear functionals. Monatsh Math., 84,
pp. 219-235. DOI: 10.1007/BF01538033
[6] Psarrakos, P. J., 2001, The q−numerical range of matrix polynomials, II, Bull. Greek Math. Soc., 45,
pp. 3-15. DOI: not available
[7] Psarrakos, P. J., and Vlamos, P. M., 1998. The q−numerical range of matrix polynomials. Linear
Multilinear Algebra, 47(1), pp. 1-9. DOI: 10.1080/03081080008818627
[8] Rezagholi, Sh. and Yasini, R., 2024. Index rank−k numerical range of matrices. J. Mahani Math.
Res., 13(1), pp. 525-534. DOI: 10.22103/jmmr.2023.21566.1445
[9] Safarzadeh, M. and Salemi, A., 2018. DGMRES and index numerical range of matrices. J. Comput.
Appl. Math., 335, pp. 349-360. DOI: 10.1016/j.cam.2017.12.009