ArchiveVolume 5, Issue 5, October 2017
Mária Pető
Pages: 71-78     Published Online: Nov. 16, 2017
DOI: 10.11648/j.ijass.20170505.11        Views 1692      Downloads 67
Guozhong Zhao, Jiayi Yu, Yashang Li, Jia Wang
Pages: 79-84     Published Online: Dec. 1, 2017
DOI: 10.11648/j.ijass.20170505.12        Views 2001      Downloads 60
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