%0 Journal Article
%A de Cornulier, Yves
%A Tessera, Romain
%T Quasi-isometrically embedded free sub-semigroups
%J Geometry & topology
%D 2008
%P 461-473
%V 12
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/articles/10.2140/gt.2008.12.461/
%R 10.2140/gt.2008.12.461
%F GT_2008_12_1_a10