About author:OUYANG Cheng(1964- ), female, native of Taining, Fujian, a professor of Huzhou Teachers
College, M.S.D., engages in singular perturbation theory.
Supported by:
Supported by the National Natural Science Foundation of China(10471039);Supported by the E-Institutes of Shanghai Municipal Education Commission(E03004);Supported by the Natural Science Foundation of Zhejiang Province(Y606268);