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Tenopir, C.: Full-text retrieval : systems and files (1994)
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Perez, E.: Text enhancement : Controlled vocabulary vs. free text (1982)
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Poler, E.M.: Overcoming limitations in database searches (1992)
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Lespinasse, K.: TREC: une conference pour l'evaluation des systemes de recherche d'information (1997)
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Notess, G.R.: Northern Light : new search engine for the Web and full-text articles (1998)
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