@article{10_1017_S0017089500007187, author = {Crabb, M. J. and McGregor, C. M.}, title = {Polynomials in a hermitian element}, journal = {Glasgow mathematical journal}, pages = {171--176}, year = {1988}, volume = {30}, number = {2}, doi = {10.1017/S0017089500007187}, url = {http://geodesic.mathdoc.fr/articles/10.1017/S0017089500007187/} }