Zhang, Chong-Miao
Xu, Li-Mei
Xu, Peng-Cheng
Wang, Xiaochang C.
Funding for this research was provided by:
National Natural Science Foundation of China (51578441)
Scientific Research Program Funded by Shaanxi Provincial Education Department (15JK1442)
Program for Innovative Research Team in Shaanxi (2013KCT-13)
Article History
Received: 15 November 2015
Accepted: 22 January 2016
First Online: 1 March 2016
Free to read: This content has been made available to all.