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@article{MZ_1977__154_172536, author = {Thomas R. Berger and John Cossey}, title = {An {Example} in the {Theory} of {Normal} {Fitting} {Classes.}}, journal = {Mathematische Zeitschrift}, pages = {287--294}, publisher = {mathdoc}, volume = {154}, year = {1977}, zbl = {0336.20012}, url = {http://geodesic.mathdoc.fr/item/MZ_1977__154_172536/} }
Thomas R. Berger; John Cossey. An Example in the Theory of Normal Fitting Classes.. Mathematische Zeitschrift, Tome 154 (1977), pp. 287-294. http://geodesic.mathdoc.fr/item/MZ_1977__154_172536/