@article{GDZPPN002392038, title = {Subnormale H\"ullen in Permutationsgruppen.}, journal = {Mathematische Zeitschrift}, volume = {78}, year = {1962}, pages = {381-388}, zbl = {0104.24901}, url = {http://dml.mathdoc.fr/item/GDZPPN002392038} }
Wielandt, Helmut. Subnormale Hüllen in Permutationsgruppen.. Mathematische Zeitschrift, Tome 78 (1962) pp. 381-388. http://gdmltest.u-ga.fr/item/GDZPPN002392038/