Li, Yuan
Jing, Hongyang
Han, Yongdian
Xu, Lianyong
Lu, Guoquan
Funding for this research was provided by:
Key Project in the Science & Technology Pillar Program of Tianjin (11ZCKFGX03000)
Program for New Century Excellent Talents in University (CN) (NCET-11-0375)
Specialized Research Fund for the Doctoral Program of Higher Education of China (20110032130002)