Guo, Shangwei
Xiang, Tao
Li, Xiaoguo
Funding for this research was provided by:
the Program for New Century Excellent Talents in University (NCET-12-0589)
the Fundamental Research Funds for the Central Universities (106112015CDJXY180003)
the Natural Science Foundation Project of Chongqing Science and Technology Commission (cstc2012jjA40017,cstc2013jcyjA40017)