%0 Journal Article %A Osburn, Robert %T A Note on 4-Rank Densities %J Canadian mathematical bulletin %D 2004 %P 431-438 %V 47 %N 3 %U http://geodesic.mathdoc.fr/articles/10.4153/CMB-2004-042-1/ %R 10.4153/CMB-2004-042-1 %F 10_4153_CMB_2004_042_1