Liu, Lili
Zeng, Xianshi
Gou, Qingdong
Ye, Yuanxiu
Wen, Yufeng
Ou, Ping
Funding for this research was provided by:
the Science and Technology Research Program of Chongqing Municipal Education Commission (KJ1710252)
the Natural Science Foundation of China (51661013, 11464020)
the PhD Start-up Fund of Natural Science Foundation of Jinggangshan University (JZB15007)
Article History
Received: 10 August 2017
Accepted: 20 February 2018
First Online: 6 March 2018
Author contributions
: Xianshi Zeng, Ping Ou and Yuanxiu Ye carried out the theoretical calculations; Lili Liu, Qingdong Gou and Yufeng Wen analyzed the data; Lili Liu wrote the paper.
: The authors declare no conflict of interest.