Chen, Yuzhi
Chen, Xudong
Bu, Jingwu
Funding for this research was provided by:
the National Natural Science Foundation of China (51509078)
Natural Science Foundation of Jiangsu Province (BK20150820)
the Fundamental Research Funds for the Central Universities (2016B06014)
Article History
Received: 2 March 2016
Revised: 20 June 2016
Accepted: 3 July 2016
First Online: 23 December 2016