@article{10_4153_CMB_1972_082_8,
     author = {Marsaglia, G. and Styan, G. P. H.},
     title = {When {Does} {Rank(A+B)=Rank(A)+Rank(B)?}},
     journal = {Canadian mathematical bulletin},
     pages = {451--452},
     year = {1972},
     volume = {15},
     number = {3},
     doi = {10.4153/CMB-1972-082-8},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CMB-1972-082-8/}
}