@article{10_4153_CMB_1975_061_4,
     author = {Campbell, Stephen L. and Meyer, Carl D.},
     title = {EP {Operators} and {Generalized} {Inverses}},
     journal = {Canadian mathematical bulletin},
     pages = {327--333},
     year = {1975},
     volume = {18},
     number = {3},
     doi = {10.4153/CMB-1975-061-4},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CMB-1975-061-4/}
}