%0 Journal Article %A Herzog, Gerd %A Kunstmann, Peer Chr. %T Universally divergent Fourier series via Landau's extremal functions %J Commentationes Mathematicae Universitatis Carolinae %D 2015 %P 159-168 %V 56 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.14712/1213-7243.2015.115/ %R 10.14712/1213-7243.2015.115 %G en %F 10_14712_1213_7243_2015_115