@article{10_4153_CJM_1984_018_0,
     author = {Borwein, J. M. and Richmond, B.},
     title = {How {Many} {Matrices} {Have} {Roots?}},
     journal = {Canadian journal of mathematics},
     pages = {286--299},
     year = {1984},
     volume = {36},
     number = {2},
     doi = {10.4153/CJM-1984-018-0},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CJM-1984-018-0/}
}