%0 Journal Article %A Macphail, M. S. %T Remark on Co-Null Matrices %J Canadian mathematical bulletin %D 1965 %P 105-107 %V 8 %N 1 %U http://geodesic.mathdoc.fr/articles/10.4153/CMB-1965-013-2/ %R 10.4153/CMB-1965-013-2 %F 10_4153_CMB_1965_013_2