%0 Journal Article %A Glen, Amy %A Levé, Florence %A Richomme, Gwénaël %T Directive words of episturmian words : equivalences and normalization %J RAIRO. Theoretical Informatics and Applications %D 2009 %P 299-319 %V 43 %N 2 %I EDP-Sciences %U https://www.numdam.org/articles/10.1051/ita:2008029/ %R 10.1051/ita:2008029 %G en %F ITA_2009__43_2_299_0