Sun, Ming
Li, Jichun
Wang, Peizhen
Zhang, Zhimin
Funding for this research was provided by:
National Natural Science Foundation of China (11671233, 11471031)
National Natural Science Foundation of China (91430216, U1530401)
National Science Foundation (DMS-1416742, DMS-1419040)
Article History
Received: 23 March 2017
Accepted: 22 August 2017
First Online: 4 September 2017