1. An iterative solution method for linear systems of which the coefficient matrix is symmetric M-matrix;Meijerink;Math. Comput.,1977
2. Iterative Methods for Sparse Linear Systems;Saad,1996
3. Iterative Solution of Large Sparse Systems of Equations;Hackbusch,1994
4. Algebraic Multigrid (AMG);Ruge,1987
5. Iterative Solution Methods;Axelsson,1994