%0 Journal Article %A Stefan Neuwirth %T Metric unconditionality and Fourier analysis %J Studia Mathematica %D 1998 %P 19-62 %V 131 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/sm-131-1-19-62/ %R 10.4064/sm-131-1-19-62 %G en %F 10_4064_sm_131_1_19_62