%0 Journal Article %A J. Bourgain %A T. Wolff %T A remark on gradients of harmonic functions in dimension ≥3 %J Colloquium Mathematicum %D 1990 %P 253-260 %V 60 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/cm-60-61-1-253-260/ %R 10.4064/cm-60-61-1-253-260 %G en %F 10_4064_cm_60_61_1_253_260