Nonstationary 2-D recursive filter for speckle reduction. - Darwin T. Kuan; Alexander A. Sawchuk; Timothy C. Strand; Pierre Chavel (ICASSP, 1982)

Nonstationary 2-D recursive restoration of images with signal-dependent noise. - Darwin T. Kuan; Alexander A. Sawchuk; Timothy C. Strand; Pierre Chavel (ICASSP, 1984)

Adaptive Noise Smoothing Filter for Images with Signal-Dependent Noise. - Darwin T. Kuan; Alexander A. Sawchuk; Timothy C. Strand; Pierre Chavel (IEEE Trans. Pattern Anal. Mach. Intell., 1985)

Adaptive restoration of images with speckle. - Darwin T. Kuan; Alexander A. Sawchuk; Timothy C. Strand; Pierre Chavel (IEEE Trans. Acoust. Speech Signal Process., 1987)