%0 Journal Article
%A Neumann, B. H.
%T On a Conjecture of Hanna Neumann
%J Glasgow mathematical journal
%D 1956
%P 13-17
%V 2
%N 1
%U http://geodesic.mathdoc.fr/articles/10.1017/S2040618500033384/
%R 10.1017/S2040618500033384
%F 10_1017_S2040618500033384