Proceedings of the 6th International Conference on Harmonic Analysis and Partial Differential Equations
Volume EXTRA,  Issue   (2002)  pp. 209-228 DOI: 10.5565/PUBLMAT_Esco02_10
Why the Riesz transforms are averages of the dyadic shifts?
S. Petermichl, S. Treil, A. Volberg
Article ]