%0 Journal Article %A Sandra Vaz %A Pedro Martins Rodrigues %T Periodicity of β-expansions for certain Pisot units %J ESAIM. Proceedings %D 2012 %P 48-60 %V 36 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.1051/proc/201236005/ %R 10.1051/proc/201236005 %G en %F EP_2012_36_a5