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Jianchao, X.; Ming, H.; Milin, S.: On indexing descriptors for document archive (1998)
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Käki, M.: fKWIC: frequency-based Keyword-in-Context Index for filtering Web search results (2006)
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Cunningham, S.J.: Approximating document descriptors : what to do when a catalog isn't available (1997)
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Gödert, W.: Verbale Inhaltserschließung : Ein Übersichtsartikel als kommentierter Literaturbericht (1991)
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Lawrence, S.; Giles, C.L.; Bollaker, K.: Digital libraries and Autonomous Citation Indexing (1999)
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