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- 01/01/1997
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- Publication date
- 01/01/1999
- Field of study
- Publication venue
- Publication date
- 01/01/1999
- Field of study
- Publication venue
- Publication date
- 01/01/1997
- Field of study
- Publication venue
- Publication date
- 01/01/1997
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- Publication date
- 01/01/2009
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- Publication date
- 01/01/2001
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- Publication date
- 01/01/2009
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- Publication date
- 01/01/2015
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- Publication venue
- Publication date
- 01/01/2015
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