SemCrypt - Ensuring Privacy of Electronic Documents Through Semantic-Based Encrypted Query Processing. - Michael Schrefl; Katharina Grün; Jürgen Dorn (ICDE Workshops, 2005)

Schema-aware labelling of XML documents for efficient query and update processing in SemCrypt. - Katharina Grün; Michael Karlinger; Michael Schrefl (Comput. Syst. Sci. Eng., 2006)

Exploiting the Structure of Update Fragments for Efficient XML Index Maintenance. - Katharina Grün; Michael Schrefl (APWeb/WAIM, 2007)

Multi-Level Domain Modeling with M-Objects and M-Relationships. - Bernd Neumayr; Katharina Grün; Michael Schrefl (APCCM, 2009)