http://ocean.kisti.re.kr/downfile/volume/apocp/POCPA9/2012/v13n8/POCPA9_2012_v13n8_3687.pdf
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http://apjcpcontrol.net/paper_file/issue_abs/Volume13_No8/3687-93%207.7%20Lidao%20Bao.pdf
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http://www.xueshufan.com/publication/2138379540
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http://www.apjcpcontrol.org/paper_file/issue_abs/Volume13_No8/3687-93%207.7%20Lidao%20Bao.pdf
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http://journal.waocp.org/article_26743_819d01a485888734ecb9bf99a4975de2.pdf
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http://www.apocpcontrol.org/paper_file/issue_abs/Volume13_No8/3687-93%207.7%20Lidao%20Bao.pdf
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http://apepressco.com/apjcp/apjcp_file/issue_abs/Volume13_No8/3687-93%207.7%20Lidao%20Bao.pdf
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