1. Some Comparisons of Software Packages for Large Sparse Linear Systems;Eisenstat,1979
2. An Approximate Factorization Procedure for Solving Self-adjoint Elliptic Difference Equations;Dupont;SIAM J. Numer. Anal.,1968
3. ITPACK Report: Adaptive Iterative Algorithms Using Symmetric Sparse Storage;Grimes,1978
4. Grimes, R.G., D.R. Kincaid, D.M. Young, “ITPACK 2.0 User's Guide,” CNA-150, Center for Numerical Analysis, University of Texas, Austin, Texas.
5. Accelerated Iterative Methods;Hageman,1980