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Grill, E.: Relationale Datenbanken; vom logischen Konzept zur physischen Realisierung : Ziele, Methoden, Fallstudie (1990)
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Henzler, R.G.: Information und Dokumentation : Sammeln, Speichern und Wiedergewinnen von Fachinformation in Datenbanken (1992)
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Survey of text mining : clustering, classification, and retrieval (2004)
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