Zhang, Ai-wei
Guo, Wei-hua
Qi, Ya-fei
Wang, Jian-zhen
Ma, Xiang-xing
Yu, De-xin
Funding for this research was provided by:
Science and Technology Development Plan Project of Shandong Province (No. 2014GSF118166)
Natural Science Foundation of Shandong Province (CN) (No. ZR2012HM012)
Fundamental Research Funds of Shandong University (No. 2014QLKY01)