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Wettler, M.; Rapp, R.; Ferber, R.: Freie Assoziationen und Kontiguitäten von Wörtern in Texten (1993)
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Ferber, R.: Vorhersage der Suchwortwahl von professionellen Rechercheuren in Literaturdatenbanken durch assoziative Netze (1992)
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Ferber, R.: Dokumentsuche und Dokumenterschließung (1999)
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Ferber, R.; Wettler, M.; Rapp, R.: ¬An associative model of word selection in the generation of search queries (1995)
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Ferber, R.: Automated indexing with thesaurus descriptors : a co-occurence based approach to multilingual retrieval (1997)
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