About the Authors
- Zhixiu Du
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Roles Data curation, Funding acquisition, Methodology, Project administration, Resources, Software, Supervision, Writing – original draft, Writing – review & editing
* E-mail: duzhixiu-2008@163.com
Affiliation School of Statistics and Mathematics, Inner Mongolia University of Finance and Economics, Inner Mongolia, China
- Jinzhu Du
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Roles Funding acquisition
Affiliation Inner Mongolia University of Finance and Economics, Inner Mongolia, China
Competing Interests
The authors have declared that no competing interests exist.