%0 Journal Article
%A David L. Winter
%A Murphy Paul F.
%T Groups All of Whose Subgroups are M-Groups.
%J Mathematische Zeitschrift
%D 1972
%P 73-78
%V 124
%I mathdoc
%U http://geodesic.mathdoc.fr/item/MZ_1972__124_171658/
%F MZ_1972__124_171658