1. Loupas T., McDicken W. N., Allan P. L.. An adaptive weighted medianfilter for speckle suppression in medical ultrasonic images IEEETransactions on Circuits and Systems. 1989;36:129–135.
2. Karaman M., Kutay M. A., Bozdagi G.. An adaptive speckle suppressionfilter for medical ultrasonic imaging IEEE Transactions on MedicalImaging. 1995;14:283–292.
3. Mateo Juan L., Fernndez-Caballero Antonio. Finding out generaltendencies in speckle noise reduction in ultrasound images ExpertSystems with Applications. 2009;36:7786–7797.
4. Wiener N.. Extrapolation, Interpolation, and Smoothing of StationaryTime Series. Wiley, New York 1949.
5. Perona P., Malik J.. Scale-space and edge detection using anisotropicdiffusion IEEE Transactions on Pattern Analysis and MachineIntelligence. 1990;12:629–639.