@article{CMH_1973__48_139538,
     author = {Hans H. Storrer},
     title = {Epimorphic {Extensions} of {Non-Commutative} {Rings}},
     journal = {Commentarii mathematici Helvetici},
     pages = {72--86},
     publisher = {mathdoc},
     volume = {48},
     year = {1973},
     zbl = {0258.16027},
     url = {http://geodesic.mathdoc.fr/item/CMH_1973__48_139538/}
}