Chen, Long
Wu, Yongke
Zhong, Lin
Zhou, Jie
Funding for this research was provided by:
National Natural Science Foundation of China (1501088)
Directorate for Mathematical and Physical Sciences (1418934, 115961)
Directorate for Mathematical and Physical Sciences (1115961, 1418934)
National Nature Science Foundation of China (11501485)
the Fundamental Research Funds for the Central Universities of China (YGX2015J097, UESTC)
doctoral research project of Xiangtan University (09kzkz08050)
Article History
Received: 10 August 2017
Revised: 8 March 2018
Accepted: 13 March 2018
First Online: 21 March 2018