%0 Journal Article %A Alfred Geroldinger %T A structure theorem for sets of lengths %J Colloquium Mathematicum %D 1998 %P 225-259 %V 78 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/cm-78-2-225-259/ %R 10.4064/cm-78-2-225-259 %G en %F 10_4064_cm_78_2_225_259