@article{10_4153_CMB_1961_029_0,
     author = {Wild, Jonathan},
     title = {On {Some} {Invariants} of a {Bilinear} {Form}},
     journal = {Canadian mathematical bulletin},
     pages = {261--264},
     year = {1961},
     volume = {4},
     number = {3},
     doi = {10.4153/CMB-1961-029-0},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CMB-1961-029-0/}
}