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@article{MZ_1962__79_170076, author = {Helmut Wielandt}, title = {Subnormale {H\"ullen} in {Permutationsgruppen.}}, journal = {Mathematische Zeitschrift}, pages = {381--388}, publisher = {mathdoc}, volume = {79}, year = {1962}, zbl = {0104.24901}, url = {http://geodesic.mathdoc.fr/item/MZ_1962__79_170076/} }
Helmut Wielandt. Subnormale Hüllen in Permutationsgruppen.. Mathematische Zeitschrift, Tome 79 (1962), pp. 381-388. http://geodesic.mathdoc.fr/item/MZ_1962__79_170076/