%0 Journal Article
%A Heiner Zieschang
%A Edelgard Gramberg
%T Order Reduced Reidemeister-Schreier Subgroup Presentations and Applications.
%J Mathematische Zeitschrift
%D 1979
%P 53-70
%V 168
%I mathdoc
%U http://geodesic.mathdoc.fr/item/MZ_1979__168_172860/
%F MZ_1979__168_172860