Li, Yan
He, Zhi
Funding for this research was provided by:
FN:The NSF of china (GN:ID0EYOAC58)
FN:The Doctoral Fund of Hunan University of Arts and Science (GN:ID0EHCAE59)
FN:Natural Science Foundation of Hunan Province (GN:ID0EVFAE60)
FN:The Research Foundation of Education, Bureau of Hunan Province (GN:ID0EZGAE61)