Xu, Yejun
Xi, Yusha
Cabrerizo, Francisco Javier
Herrera-Viedma, Enrique
Funding for this research was provided by:
National Natural Science Foundation of China (71871085, 71471056)
Spanish Ministry of Science and Universities (TIN2016-75850-R)
Article History
Received: 5 December 2018
Revised: 22 May 2019
Accepted: 8 July 2019
First Online: 26 July 2019