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Dreis, G.: Zur Retrievalorganisation des OPAC (1991)
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- Zeitschrift für Bibliothekswesen und Bibliographie: Sonderh.52
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- Der Online-Publikumskatalog der Universitätsbibliothek Düsseldorf: methodische Erkenntnisse und Erfahrungen, OPAC-Kolloquium am 27.-28.11.1989. Hrsg.: G. Gattermann
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Dreis, G.: Formen des sachlichen Zugriffs : Probleme des automatischen Indexierens (1991)
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- Zeitschrift für Bibliothekswesen und Bibliographie: Sonderh.52
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- Der Online-Publikumskatalog der Universitätsbibliothek Düsseldorf: methodische Erkenntnisse und Erfahrungen, OPAC-Kolloquium am 27. u.28.11.1989. Hrsg.: G. Gattermann
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Dreis, G.: Zur Analyse des Benutzerverhaltens. T.2 (1991)
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- Zeitschrift für Bibliothekswesen und Bibliographie: Sonderh.52
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- Der Online-Publikumskatalog der Universitätsbibliothek Düsseldorf: methodische Erkenntnisse und Erfahrungen, OPAC-Kolloquium am 27.-28.11.1989. Hrsg.: G. Gattermann
