%0 Journal Article %A Boyd, David %T Which Rationals are Ratios of Pisot Sequences? %J Canadian mathematical bulletin %D 1985 %P 343-349 %V 28 %N 3 %U http://geodesic.mathdoc.fr/articles/10.4153/CMB-1985-041-6/ %R 10.4153/CMB-1985-041-6 %F 10_4153_CMB_1985_041_6