Yi, Min
Bai, Heli
Xue, Meizhao
Yi, Huilan
Funding for this research was provided by:
National Natural Science Foundation of China (30470318, 30870454, 31371868)
Doctoral Program of Higher Education of China (20070108007, 20121401110007)
Shanxi Scholarship Council of China (2009022, 2012013)