Almerico Murli Luisa D'Amore Valentina de Simone The Wiener Filter and Regularization Methods for Image Restoration Problems. 394-399 1999 conf/iciap/1999 ICIAP http://doi.ieeecomputersociety.org/10.1109/ICIAP.1999.797627 db/conf/iciap/iciap1999.html#MurliDS99