@article{10_1017_S0017089520000178,
     author = {CRABB, MICHAEL J. and DUNCAN, JOHN and McGREGOR, COLIN M.},
     title = {HERMITIANS {IN} {MATRIX} {ALGEBRAS} {WITH} {OPERATOR} {NORM}},
     journal = {Glasgow mathematical journal},
     pages = {280--290},
     year = {2021},
     volume = {63},
     number = {2},
     doi = {10.1017/S0017089520000178},
     url = {http://geodesic.mathdoc.fr/articles/10.1017/S0017089520000178/}
}