@article{MZ_1975__142_172205,
     author = {Dieter Blessenohl},
     title = {\"Uber {Formationen} und {Halluntergruppen} endlicher, aufl\"osbarer {Gruppen.}},
     journal = {Mathematische Zeitschrift},
     pages = {299--300},
     publisher = {mathdoc},
     volume = {142},
     year = {1975},
     language = {de},
     url = {http://geodesic.mathdoc.fr/item/MZ_1975__142_172205/}
}