@article{MZ_1970__118_171432,
     author = {Wolfgang Gasch\"utz and Dieter Blessenohl},
     title = {\"Uber normale {Schunck-} und {Fittingklassen.}},
     journal = {Mathematische Zeitschrift},
     pages = {1--8},
     year = {1970},
     volume = {118},
     zbl = {0208.03301},
     url = {http://geodesic.mathdoc.fr/item/MZ_1970__118_171432/}
}