@article{10_21136_CMJ_1978_101514,
     author = {Conrad, Paul F.},
     title = {The hulls of semiprime rings},
     journal = {Czechoslovak Mathematical Journal},
     pages = {59--86},
     publisher = {mathdoc},
     volume = {28},
     number = {1},
     year = {1978},
     doi = {10.21136/CMJ.1978.101514},
     mrnumber = {0463223},
     zbl = {0396.06006},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1978.101514/}
}