Liu, Xin
Gao, Rui-wei
Li, Miao
Si, Chun-feng
He, Yong-peng
Wang, Min
Yang, Ying
Zheng, Qing-yin
Wang, Chao-yun
Funding for this research was provided by:
the Project of Shandong Province Higher Educational Science and Technology Program (No. J10LF89)
the Natural Science Foundation of Shandong Province (No. ZR2012HM076)
the Foundation of Taishan Scholar (tshw20110515)