Author(s): |
Jinting Yang, Handan college, Handan, China,056005 Bing Fang, college of Economics and Management, Hebei university of engineering, Handan, China,056038 Jingxiao Sun, college of Economics and Management, Hebei university of engineering, Handan, China,056038 Huihui Pei, college of Economics and Management, Hebei university of engineering, Handan, China,056038 Qinglian Liu, college of Economics and Management, Hebei university of engineering, Handan, China,056038 |