%0 Journal Article
%A James E. Roseblade
%T The Derived Series of a Join of Subnormal Sugroups.
%J Mathematische Zeitschrift
%D 1970
%P 57-69
%V 117
%I mathdoc
%U http://geodesic.mathdoc.fr/item/MZ_1970__117_171407/
%F MZ_1970__117_171407