ArchiveVolume 7, Issue 1, February 2019
Yafeng Hu, Weiguang Ju, Ke Gao
Pages: 1-5     Published Online: Feb. 1, 2019
DOI: 10.11648/j.ijefm.20190701.11        Views 26      Downloads 33
Xinyang Zhang
Pages: 6-12     Published Online: Feb. 1, 2019
DOI: 10.11648/j.ijefm.20190701.12        Views 24      Downloads 29
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