@article{JRAM_1964__0214_0215_150638,
     author = {Robert Berger},
     title = {Differenten regul\"arer {Ringe.}},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {441--442},
     publisher = {mathdoc},
     volume = {0214_0215},
     year = {1964},
     zbl = {0142.28804},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1964__0214_0215_150638/}
}