%0 Journal Article %A A. van der Poorten %A H. Williams %T On certain continued fraction expansions of fixed period length %J Acta Arithmetica %D 1999 %P 23-35 %V 89 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/aa-89-1-23-35/ %R 10.4064/aa-89-1-23-35 %G en %F 10_4064_aa_89_1_23_35