@article{10_4064_cm87_1_2,
     author = {Mats Erik Andersson},
     title = {Two examples of subspaces in $L^{2l}$
spanned by characters of finite order},
     journal = {Colloquium Mathematicum},
     pages = {13--26},
     publisher = {mathdoc},
     volume = {87},
     number = {1},
     year = {2001},
     doi = {10.4064/cm87-1-2},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/cm87-1-2/}
}