%0 Journal Article
%A H. Zieschang
%T Subgroups of a~free product of cyclic groups
%J Informatics and Automation
%D 1983
%P 284-295
%V 154
%I mathdoc
%U http://geodesic.mathdoc.fr/item/TRSPY_1983_154_a30/
%G ru
%F TRSPY_1983_154_a30