ArchiveVolume 8, Issue 6, December 2019
Bin Li
Pages: 88-94     Published Online: Dec. 9, 2019
DOI: 10.11648/j.acm.20190806.11        Views 401      Downloads 291
Xiaojun Zhang
Pages: 95-104     Published Online: Feb. 13, 2020
DOI: 10.11648/j.acm.20190806.12        Views 313      Downloads 114
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