ArchiveVolume 7, Issue 1, March 2019
Evgeniy Bryndin
Pages: 1-9     Published Online: Jul. 13, 2019
DOI: 10.11648/j.se.20190701.11        Views 614      Downloads 139
Abou Bakr Ramadan, Mazhar Mahmoud Hefnawi
Pages: 10-15     Published Online: Jul. 13, 2019
DOI: 10.11648/j.se.20190701.12        Views 557      Downloads 80
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