Peng, Xindong
Smarandache, Florentin
Funding for this research was provided by:
National Natural Science Foundation of China (61462019)
MOE (Ministry of Education in China) Project of Humanities and Social Sciences (18YJCZH054)
Natural Science Foundation of Guangdong Province (2018A030307033)
Article History
First Online: 29 August 2019
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.