Affiliation: | 1. School of Mathematics, Jilin University, Changchun 130012, P. R. China, keiyinhuang@gmail.com;2. School of Mathematics, Jilin University, Changchun 130012, P. R. China, shisy@jlu.edu.cn;3. State Key Laboratory of Automotive Simulation and Control, Jilin University, Changchun 130012, P. R. China |