On Modeling Power of Object-Relational Data Models in Technical Applications. - Nan Zhang 009; Theo Härder (ADBIS, 1997)

Supporting Adaptable Technical Information Systems in Heterogeneous Environments - Using WWW and ORDBMS. - Theo Härder; Henrik Loeser; Nan Zhang 009 (DEXA Workshop, 1997)

Enriching Object-Relational Databases with Relationship Semantics. - Nan Zhang 009; Theo Härder; Joachim Thomas 001 (NGITS, 1997)

Unterstützung dynamischer Typkonstruktion in Technischen Informationssystemen. - Henrik Loeser; Nan Zhang 009; Jürgen Zimmermann 002 (CAD, 1998)

On a Buzzword "Extensibility" - What We Have Learned from the ORIENT Project? - Nan Zhang 009; Theo Härder (IDEAS, 1999)

Enriched Relationship Processing in Object-Relational Database Management Systems. - Nan Zhang 009; Norbert Ritter; Theo Härder (CODAS, 2001)

Supporting semantically rich relationships in extensible object relational database management systems. - Nan Zhang 009 (Shaker, 2001)