@article{MOMA_1986__101_178272, author = {Roger Yue Chi Ming}, title = {A {Note} on {Semi-prime} {Rings.}}, journal = {Monatshefte f\"ur Mathematik}, pages = {173--182}, year = {1986}, volume = {101}, zbl = {0587.16002}, url = {http://geodesic.mathdoc.fr/item/MOMA_1986__101_178272/} }