1. Solution of Partial Differential Equations on Vector and Parallel Computers
2. R. S. Varga Matrix iterative analysis , Prentice Hall , Englewood Cliffs , NJ , 1962 .
3. D. M. Young Iterative solution of large linear systems , Academic Press , New York , 1981 .
4. L. A. Hageman and D. M. Young Applied iterative methods , Academic Press , New York , 1981 .