[1]Mo Jiaqi.The singularly perturbed problem for combustion reaction diffu sion. Acta Math Appl Sinica, 2001,17: 255-259

[2]Mo Jiaqi,Ouyang Cheng. A class of nonlocal boundary value problems  of no nlinear elliptic systems in unbounded domains.Acta Math Sci,2001, 21B: 93-97

[3]Mo Jiaqi. A class of singularly perturbed reaction diffusion integral  differential system. Acta Math Appl Sinica, 1999,15: 19-23

[4]Mo Jiaqi. A class of singularly perturbed problems with nonlinear react ion diffusion equation. Advances in Math, 1998,27: 53-58

[5]Mo Jiaqi. The nonlocal boundary value problems of nonlinear elliptic sy stems in unbounded domains. Appl Math Comput, 1997,86: 115-121

[6]Mo Jiaqi. A singualrly perturbed nonlinear boundary value problem. J M ath Ana1 Appl, 1993,178: 289-293

[7]Mo Jiaqi. Singular perturbation for a class of nonlinear reaction diffu sion systems. Science in China, 1989,32: 1306-1315

[8]Nefedov N N,Schneider K R. Immediate exchange of stabilities  in s ingularly perturbed systems. Differential and Integral Equations, 1999,12:583-599 

[9]Butuzov V F,Smurov I. Initial boundary value problem for a singularly  perturbed parabolic equation in case of exchange of stability.J Math Anal Appl, 1999,234: 183-192

[10]Butuzov V F,Nefedov N N, Schneider K R. Singularly perturbe d elliptic  problems in the case of exchange of stabilities. J Diffequs,2001,169: 373-395 

[11]De Jager E M, Jiang Furu. The Theory of Singular Perturbations.Amsterdam: NorthHolland,1996

[12]Pao C V. Nonlinear Parabolic Elliptic Equations. New York:  Plenum Press, 1992