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@article{MZ_1961__75_169927, author = {Otto H. Kegel}, title = {Die {Nilpotenz} der {Hp-Gruppen.}}, journal = {Mathematische Zeitschrift}, pages = {373--376}, publisher = {mathdoc}, volume = {75}, year = {1961}, zbl = {0104.24904}, url = {http://geodesic.mathdoc.fr/item/MZ_1961__75_169927/} }
Otto H. Kegel. Die Nilpotenz der Hp-Gruppen.. Mathematische Zeitschrift, Tome 75 (1961), pp. 373-376. http://geodesic.mathdoc.fr/item/MZ_1961__75_169927/