1. An iteration formula for fredholm integral equations of the first kind;Landweber;Amer. J. Math.,1951
2. Introduction to Inverse Problems in Imaging;Bertero,1998
3. Regularization of Inverse Problems;Engl,1996
4. Numerical Methods for Least Squares Problems;Björck,1996
5. Iterative Solution of Large Sparse Systems of Equations;Hackbusch,2016