@article{10_4153_CMB_1970_072_0,
     author = {Murphy, Ian S.},
     title = {The {Rank} of the {Sum} of {Two} {Rectangular} {Matrices}},
     journal = {Canadian mathematical bulletin},
     pages = {384--384},
     year = {1970},
     volume = {13},
     number = {3},
     doi = {10.4153/CMB-1970-072-0},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CMB-1970-072-0/}
}