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Authors
Li, Yeping
Zhou, Gang https://orcid.org/0000-0001-5446-3498
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Funding
Funding for this research was provided by:
the National Science Foundation of China (11671134)
Applied Mathematics Project of Shanghai Dianji University (16JCXK02)
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Article History
Received: 29 October 2019
Accepted: 7 May 2020
First Online: 19 May 2020
Competing interests
: Both authors declare that there are no conflicts of interest regarding the publication of this paper.
