@article{10_4153_CMB_1965_032_8,
     author = {Brown, William G.},
     title = {A {New} {Proof} of a {Theorem} of {Dirac}},
     journal = {Canadian mathematical bulletin},
     pages = {459--463},
     year = {1965},
     volume = {8},
     number = {4},
     doi = {10.4153/CMB-1965-032-8},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CMB-1965-032-8/}
}