%0 Journal Article %A David Shreve %T Approximation of commutators of singular integrals %J Studia Mathematica %D 1976 %P 1-20 %V 56 %N 1 %U http://geodesic.mathdoc.fr/articles/10.4064/sm-56-1-1-20/ %R 10.4064/sm-56-1-1-20 %G en %F 10_4064_sm_56_1_1_20