1. C.V. Pao. Reaction Diffusion Equations with Nonlinear Boundary Conditions.Nonlinear Analysis, Methods & Appl., 1981, 5: 1077–1094.
2. C.V. Pao. Numerical Methods for Coupled Systems of Nonlinear Parabolic Boundary Value Problems.J. Math. Anal. Appl., 1990, 151: 581–608.
3. A.H. Nayfeh. Introduction to Perturbation Techniques. John Wiley & Sons, New York, 1981.
4. Mo Jiaqi. Singular Perturbation for a Class of Nonlinear Reaction Diffusion Systems.Science in China, 1989, 32: 1306–1315.
5. Mo Jiaqi. A Class of Singularly Perturbed Nonlinear Reaction Diffusion Integral-Differential Equation. Proceedings of the International Conference on IEBVP, World Scientific, Singapore, 1991, 153–160