ArchiveVolume 4, Issue 2, June 2018
Hao Yinghua, Liang Yi
Pages: 10-15     Published Online: Jul. 4, 2018
DOI: 10.11648/j.jddmc.20180402.11        Views 1514      Downloads 166
Ayat Ahmed Alrasheid, Babeker Siddig Abdallah, Amar Osman Ali
Pages: 16-21     Published Online: Jul. 24, 2018
DOI: 10.11648/j.jddmc.20180402.12        Views 1465      Downloads 196
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