Chen, Qingfeng
Zhang, Xu
Zhang, Ruchang
Funding for this research was provided by:
National Natural Science Foundation of China (61363025)
National Natural Science Foundation of China project (61751314)
Natural Science Foundation of Guangxi (2017GXNSFDA198033)
Scientific Research and Technology Development Program of Guangxi (AB17195055)
Article History
Received: 25 October 2018
Accepted: 24 January 2019
First Online: 18 February 2019
Competing interests
: The authors declare that they have no competing interests.
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