@article{MZ_1965__89_170451,
     author = {Edward M. Patterson},
     title = {The {Jacobson} radical of a pseudo-ring.},
     journal = {Mathematische Zeitschrift},
     pages = {348--364},
     publisher = {mathdoc},
     volume = {89},
     year = {1965},
     zbl = {0135.02902},
     url = {http://geodesic.mathdoc.fr/item/MZ_1965__89_170451/}
}