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Silvester, J.P.; Genuardi, M.T.; Klingbiel, P.H.: Machine-aided indexing at NASA (1994)
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Popham, M.: Text encoding, analysis, and retrieval (1996)
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Popping, R.; Roberts, C.W.: Network approaches in text analysis (1997)
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Stamatatos, E.: ¬A survey of modern authorship attribution methods (2009)
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Milstead, J.L.: Thesauri in a full-text world (1998)
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