1. J. Chauvette, F. Stenger,The approximate solution of the nonlinear equation Δu−u+u 3=0, J. Math. Anal. Appl. 51 (1975), 229–242.
2. A. Greenbaum, J. M. Ferguson,A Petrov-Galerkin finite element method for solving the neutron transport equation, J. Comput. Phys. 64 (1986), 97–111.
3. B. L. Guo,Global solutions for a class of systems of multidimensional nonlinear wave equations, Chinese Ann. Math. (A5) (1984), 401–408.
4. P. Henrici,Discrete variable methods in ODE, (1965), John Wiley and Sons., Inc., New York.
5. P. Kuo,A survey of numerical methods for solitary waves, J. Math. Res. Exposition 5 (1985), 151–157.