@article{10_4153_CMB_1994_067_1,
     author = {Craigen, R.},
     title = {Trace, {Symmetry} and {Orthogonality}},
     journal = {Canadian mathematical bulletin},
     pages = {461--467},
     year = {1994},
     volume = {37},
     number = {4},
     doi = {10.4153/CMB-1994-067-1},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CMB-1994-067-1/}
}