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@article{PORMA_1990__47_1_115704, author = {Brison, Owen J.}, title = {The {Fitting} class generated by the $\pi $-perfect groups}, journal = {Portugaliae mathematica}, pages = {99--102}, publisher = {mathdoc}, volume = {47}, number = {1}, year = {1990}, mrnumber = {1079510}, zbl = {0716.20016}, language = {en}, url = {http://geodesic.mathdoc.fr/item/PORMA_1990__47_1_115704/} }
Brison, Owen J. The Fitting class generated by the $\pi $-perfect groups. Portugaliae mathematica, Tome 47 (1990) no. 1, pp. 99-102. http://geodesic.mathdoc.fr/item/PORMA_1990__47_1_115704/