1. R. L. Burden and J. D. Faires,Numerical Analysis, 5th ed., Prindle, Weber & Schmidt, Boston, MA, 1993.
2. J. D. Cole,Perturbation Methods in Applied Mathematics, Blaisdell, Waltham, MA, 1968.
3. J. D. Faires and R. L. Burden,Numerical Methods, Prindle, Weber & Schmidt, Boston, MA, 1993.
4. J. D. Hoffman,Numerical Methods for Engineers and Scientists, McGraw–Hill, New York, NY, 1992.
5. J. D. Logan,Applied Mathematics: A Contemporary Approach, Wiley, New York, 1987.