[1]Ouyang Cheng, Mo Jiaqi.A nonlinear equation for turning point problem. Math Ap pl, 2001,14(2):6-7

[2]Mo Jiaqi, Ouyang Cheng.A class of singularly perturbed generalized boun dary value problems for quasilinear equation of higher order. Appl Math Mec h, 2001, 22(3): 372-378

[3]Mo Jiaqi, Ouyang Cheng.A class of nonlocal boundary value problems of  nonlinear elliptic systems in unbounded domains.Acta Math Sci,2001,21B(1)93-97

[4]O'Malley R E Jr. On the asymptotic solution of the singularly perturbed b oundary value problems posed by Bohé. J Math Anal Appl, 2000,242(1) :18-38

[5]Jager E M de,  Jiang Furu. The Theory of Singular Perturbations.Amsterdam: NorthHoland, 1996

[6]Nafeh A H. Introduction to Perturbation Techniquies. New York: John Wiley  & Sons,1981