@article{10_4064_sm_112_1_59_74,
     author = {J\"org Wenzel},
     title = {Ideal norms and trigonometric orthonormal systems},
     journal = {Studia Mathematica},
     pages = {59--74},
     year = {1994},
     volume = {112},
     number = {1},
     doi = {10.4064/sm-112-1-59-74},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/sm-112-1-59-74/}
}