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Hüther, H.: Wachstumsfunktionen in der automatischen Indexierung (1989)
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Fuhr, N.: Probabilistisches Indexing and Retrieval (1988)
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Kaiser, A.: Computer-unterstütztes Indexieren in Intelligenten Information Retrieval Systemen : Ein Relevanz-Feedback orientierter Ansatz zur Informationserschließung in unformatierten Datenbanken (1993)
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