@article{MM2_1981__36_154808,
     author = {Erwin B\"oger},
     title = {Das zariskische {Diskriminantenkriterium} und die {Fortsetzung} von {Derivationen.}},
     journal = {Manuscripta mathematica},
     pages = {67--82},
     publisher = {mathdoc},
     volume = {36},
     year = {1981},
     zbl = {0511.13014},
     url = {http://geodesic.mathdoc.fr/item/MM2_1981__36_154808/}
}