ArchiveVolume 5, Issue 2, June 2019
Shi Haidong
Pages: 14-19     Published Online: Oct. 2, 2019
DOI: 10.11648/j.bs.20190502.11        Views 15      Downloads 10
Florangel Vidal Fernandez, Ivan Peña Garcia, Aliesky Hernandez Rodriguez
Pages: 20-23     Published Online: Oct. 10, 2019
DOI: 10.11648/j.bs.20190502.12        Views 3      Downloads 4
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