%0 Journal Article
%A Neil Hindman
%A Dona Strauss
%A Yevhen Zelenyuk
%T Longer chains of idempotents in $\beta G$
%J Fundamenta Mathematicae
%D 2013
%P 243-261
%V 220
%N 3
%I mathdoc
%U http://geodesic.mathdoc.fr/articles/10.4064/fm220-3-5/
%R 10.4064/fm220-3-5
%G en
%F 10_4064_fm220_3_5