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Published 1996
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Published 2008
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Published 1983
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Published 2004
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by Chen
Published 2007
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by Playfair
Published 2001
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Published 2013
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Published 1981
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Published 1981
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Published 1981
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Published 1981
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Published 1981
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Published 1981
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Published 1981
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Published 1981
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Published 1981
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Published 1981
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Published 1981
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Published 1999
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Published 1981