%0 Journal Article %A Mats Erik Andersson %T Two examples of subspaces in $L^{2l}$ spanned by characters of finite order %J Colloquium Mathematicum %D 2001 %P 13-26 %V 87 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/cm87-1-2/ %R 10.4064/cm87-1-2 %G en %F 10_4064_cm87_1_2