@article{10_4153_CMB_2003_005_8,
     author = {Cheung, Wai-Shun and Li, Chi-Kwong},
     title = {Linear {Maps} {Transforming} the {Unitary} {Group}},
     journal = {Canadian mathematical bulletin},
     pages = {54--58},
     year = {2003},
     volume = {46},
     number = {1},
     doi = {10.4153/CMB-2003-005-8},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CMB-2003-005-8/}
}