@article{10_1017_S0017089501010047,
     author = {Crabb, M. J. and Duncan, J. and McGregor, C. M.},
     title = {Some extremal algebras for hermitians},
     journal = {Glasgow mathematical journal},
     pages = {29--38},
     year = {2001},
     volume = {43},
     number = {1},
     doi = {10.1017/S0017089501010047},
     url = {http://geodesic.mathdoc.fr/articles/10.1017/S0017089501010047/}
}