1. Regularization of Inverse Problems;Engl,1996
2. Digital Image Processing;Gonzalez,2002
3. The Theory of Tikhonov Regularization for Fredholm Equations of the Frist Kind;Groetsch,1984
4. Improperly Posed Problems and their Numerical Treatment;Hammerlin,1983
5. Image Reconstruction from Projections: The Fundamentals of Computerized Tomography;Hermann,1980