@article{10_4064_sm_42_3_205_219,
     author = {Carl Herz},
     title = {Drury's lemma and {Helson} sets},
     journal = {Studia Mathematica},
     pages = {205--219},
     publisher = {mathdoc},
     volume = {42},
     number = {3},
     year = {1972},
     doi = {10.4064/sm-42-3-205-219},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/sm-42-3-205-219/}
}