@article{10_4153_CMB_2004_042_1,
     author = {Osburn, Robert},
     title = {A {Note} on {4-Rank} {Densities}},
     journal = {Canadian mathematical bulletin},
     pages = {431--438},
     year = {2004},
     volume = {47},
     number = {3},
     doi = {10.4153/CMB-2004-042-1},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CMB-2004-042-1/}
}