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https://scholar.google.com/scholar_url?url=http://www.sciencedirect.com/science/article/pii/S0167923609000323&hl=zh-CN&sa=T&oi=gsb&ct=res&cd=0&ei=ByB6WNPSB4iYjAHl4regCA&scisig=AAGBfm1iHSydvwcYSUzCM3YXChNVYuoQYg
您即将离开知乎,请注意您的帐号和财产安全。
https://scholar.google.com/scholar_url?url=http://www.sciencedirect.com/science/article/pii/S0167923609000323&hl=zh-CN&sa=T&oi=gsb&ct=res&cd=0&ei=ByB6WNPSB4iYjAHl4regCA&scisig=AAGBfm1iHSydvwcYSUzCM3YXChNVYuoQYg