Key points are not available for this paper at this time.
Sylvain Sardy, Andrew G. Bruce, Paul Tseng, Block Coordinate Relaxation Methods for Nonparametric Wavelet Denoising, Journal of Computational and Graphical Statistics, Vol. 9, No. 2 (Jun., 2000), pp. 361-379
Sardy et al. (2000) studied this question.