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Gebhardt, F.: Dokumenten-Retrieval und Künstliche Intelligenz (1987)
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Gebhardt, F.: Semantisches Wissen in Datenbanken : ein Literaturbericht (1987)
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Gebhardt, F.: Querverbindungen zwischen Information-Retrieval- und Experten-Systemen (1985)
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Gebhardt, F.: Dokumentationssysteme (1981)
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