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scientific article published in 2009
scientific article published in 1968
scientific article published in 2009
scientific article published in 2009
scientific article published in 2009
scientific article published in 1968
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scientific article published in 1968
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scientific article published in 2009
scientific article published in 2009
scientific article published in 1968
scientific article published in 1968
scientific article published in 1968
scientific article published in 1968
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scientific article published in 1986
scientific article published in 2009
scientific article published in 1968
scientific article published in 1968
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scientific article published in 2009
scientific article published in 2009
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