Bao, Weizhu
Cai, Yongyong
Jia, Xiaowei
Tang, Qinglin
Funding for this research was provided by:
Ministry of Education - Singapore (R-146-000-196-112)
Division of Mathematical Sciences (1217066, 1419053)
Agence Nationale de la Recherche (12-MONU-0007-02)
Article History
Received: 6 June 2016
Revised: 13 November 2016
Accepted: 7 December 2016
First Online: 18 January 2017