Guo, Wenbin
Vdovin, E. P. http://orcid.org/0000-0002-1801-9354
Funding for this research was provided by:
Chinese Academy of Sciences President’s International Fellowship Initiative
NNSF grant of China
Wu Wen-Tsun Key Laboratory of Mathematics of Chinese Academy of Sciences
Article History
Received: 8 June 2017
First Online: 13 February 2018