@article{10_4064_cm_2_1_5_6,
     author = {A. Gleason},
     title = {A note on a theorem of {Helson}},
     journal = {Colloquium Mathematicum},
     pages = {5--6},
     publisher = {mathdoc},
     volume = {2},
     number = {1},
     year = {1949},
     doi = {10.4064/cm-2-1-5-6},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/cm-2-1-5-6/}
}