@article{MZ_1967__99_170766,
     author = {Klaus-Dieter Graf},
     title = {Zur {Kompositionsstruktur} endlicher {Gruppen} mit {Halluntergruppen.}},
     journal = {Mathematische Zeitschrift},
     pages = {76--100},
     publisher = {mathdoc},
     volume = {99},
     year = {1967},
     zbl = {0147.27101},
     url = {http://geodesic.mathdoc.fr/item/MZ_1967__99_170766/}
}