作者机构:[1]Department of Applied Mathematics, Anhui Polytechnic University, Anhui 241000, P. R. China
相关基金:Supported by the National Basic Research Program of China (973 Program, Grant No. 2007CB814901), the National Natural Science Foundation of China (Grant No. 10826098), the Natural Science Foundation of Anhui Province (Grant No. 090416225) and Anhui Natural Science Foundation of Universities (Grant No. KJ2010A037).