@article{10_4153_CMB_1969_052_2,
     author = {Courter, R.C.},
     title = {Rings {All} of whose {Factor} {Rings} are {Semi-Prime}},
     journal = {Canadian mathematical bulletin},
     pages = {417--426},
     year = {1969},
     volume = {12},
     number = {4},
     doi = {10.4153/CMB-1969-052-2},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CMB-1969-052-2/}
}