%0 Journal Article
%A Frank Levin
%T On Some Varieties of Soluble Groups. II.
%J Mathematische Zeitschrift
%D 1968
%P 162-172
%V 103
%I mathdoc
%U http://geodesic.mathdoc.fr/item/MZ_1968__103_170907/
%F MZ_1968__103_170907