1. P.J. Roach, Computational Fluid Dynamics, Hermosa, Albuquerque, NM, 1976
2. Numerical Solution of Differential Equations;Jain,1991
3. J.C. Strikwerda, Finite Difference Schemes and Partial Differential Equations, Wadsnoreth Brooks/Cole Advanced Books Software, 1989
4. Efficient solution of parabolic equations by Krylov approximation method;Gallopoulos;SIAM J. Sci. Stat. Comput.,1992