%0 Journal Article
%A J. Justin
%A G. Pirillo
%T Infinite words and permutation properties.
%J Semigroup forum
%D 1990
%P 13-22
%V 40
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/item/SF_1990__40_1_135001/
%F SF_1990__40_1_135001