@article{10_14712_1213_7243_2015_115,
     author = {Herzog, Gerd and Kunstmann, Peer Chr.},
     title = {Universally divergent {Fourier} series via {Landau's} extremal functions},
     journal = {Commentationes Mathematicae Universitatis Carolinae},
     pages = {159--168},
     publisher = {mathdoc},
     volume = {56},
     number = {2},
     year = {2015},
     doi = {10.14712/1213-7243.2015.115},
     mrnumber = {3338730},
     zbl = {06433815},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.14712/1213-7243.2015.115/}
}