Lv, Junnan
Yu, Li
Du, Wei
Li, Qun
Funding for this research was provided by:
the Fundamental Research Funds for the Central Universities in China
the National Natural Science Foundation of China (11472205)
the National Natural Science Foundation of China (11772245)
Natural Science Basic Research Plan in Shaanxi Province of China (2014K10-16)
Article History
Received: 11 December 2017
Accepted: 28 April 2018
First Online: 14 May 2018