@misc{10_4153_CMB_1964_057_1,
     title = {Addendum to some useful {Matrix} {Lemmas} in {Statistical} {Estimation} {Theory}},
     journal = {Canadian mathematical bulletin},
     pages = {615--616},
     year = {1964},
     volume = {7},
     number = {4},
     doi = {10.4153/CMB-1964-057-1},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CMB-1964-057-1/}
}