%0 Journal Article %A F. Peter Lockett %T On the Theory of Fitting Classes of Finite Soluble Groups. %J Mathematische Zeitschrift %D 1973 %P 103-116 %V 131 %I mathdoc %U http://geodesic.mathdoc.fr/item/MZ_1973__131_171882/ %F MZ_1973__131_171882