%0 Journal Article %A Robert Kaufman %T Brownian motion, approximation of functions, and Fourier analysis %J Studia Mathematica %D 1974 %P 51-68 %V 52 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/sm-52-1-51-68/ %R 10.4064/sm-52-1-51-68 %G en %F 10_4064_sm_52_1_51_68