1. Su Yucheng,The Correction Method of Boundary Layer in Singular Perturbation, Shanghai Science and Technique Press (1983), 1–239. (in Chinese)
2. V. A. Tupcev, About existence, uniqueness and asymptotic solution of boundary value problem for differential equation system with small parameter, at the highest derivative,Report Acad. SSSR,142, 6 (1962), 1261–1264. (in Russian)
3. Lin Zongchi and Lin Surong, The estimate of the solution of boundary value problem for quasilinear differential equation system,Applied Mathematics and Mechanics. (English Ed.),11, 11 (1990), 1035–1042.
4. Huang Weizhang, The estimate of the solution of boundary value problem for quasilinear differential equation system,Applied Mathematics and Mechanics (English Ed.),13, 8 (1992), 745–754.
5. Lin Zorgchi and Lin Surong, The asymptotic expansion of the solution of nonlinear differential equation system with Robin boundary value.J. Fujian Normal University,11, 2 (1995), 1–9. (in Chinese)