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Külper, U.; Schulz, U.; Will, G.: Bücherschatz - a prototype of a children's OPAC (1997)
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Schulz, U.: Was wir über OPAC-Nutzer wissen : fehlertolerante Suchprozesse in OPACs (1994)
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Schulz, U.: "Wie der Schnabel gewachsen ist" : Über die Qualität von OPACs - Anforderungen, Realität, Perspektiven (1998)
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Schmidt, E.; Weigang, G.; Schulz, U.: OPAC-Nutzer ernst genommen : eine Thinking-Aloud-Studie am ALS-OPAC der Hamburger Öffentlichen Bücherhallen (1997)
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