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First Author:
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| Moustapha Dembélé |
| Beijing Technology and Business University, and Hunan University |
| moustaphdemb@gmail.com |
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| moustaphdemb@gmail.com |
| Beijing, China |
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| 8615910403150(Phone) |
| 8615910403150(Fax) |
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Third Author:
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| Zhou Qingjie |
| Beijing Technology and Business University |
| zhouqj@btbu.edu.cn |
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| Beijing, China |
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Fourth Author:
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| Xiao Hao |
| Hunan University, Institute of African Studies |
| xh_26@126.com |
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| Beijing, China |
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