Improving the Usability of a Digital Library. - Harald Krottmaier (ELPUB, 2001)

Transclusions in the 21st Century. - Harald Krottmaier; Hermann A. Maurer (J. Univers. Comput. Sci., 2001)

Transcluded Documents: Advantages of Reusing Document Fragments. - Harald Krottmaier (ELPUB, 2002)

Current and Future Features of Digital Journals. - Harald Krottmaier (EurAsia-ICT, 2002)

Automatic References: Active Support for Scientists in Digital Libraries. - Harald Krottmaier (ICADL, 2002)

Semantic Annotation and Retrieval of Digital Photos. - Mathias Lux; Jutta Becker; Harald Krottmaier (CAiSE Short Paper Proceedings, 2003)

Stop Reading (Useless Parts)!. - Harald Krottmaier (ELPUB, 2003)

Links to the Future. - Harald Krottmaier (J. Digit. Inf. Manag., 2003)

The need for sharing user-profiles in digital libraries. - Harald Krottmaier (ELPUB, 2004)

What we Expect from Digital Libraries. - Heinz Dreher; Harald Krottmaier; Hermann A. Maurer (J. Univers. Comput. Sci., 2004)

Some Thoughts on Hyper-links. - Harald Krottmaier (ELPUB, 2005)

Using SVG for an User-Interface to a Digital Library. - Harald Krottmaier; Christian Scherngell (ELPUB, 2006)

File-Formats for Preservation: Evaluating the Long-Term Stability of File-Formats. - Carl Rauch; Harald Krottmaier; Klaus Tochtermann (ELPUB, 2007)

PROBADO - A Generic Repository Integration Framework. - Harald Krottmaier; Frank Kurth; Thorsten Steenweg; Hans-Jürgen Appelrath; Dieter W. Fellner (ECDL, 2007)

Guest Editors' Introduction: 3D Documents. - Dieter W. Fellner; Dietmar Saupe; Harald Krottmaier (IEEE Computer Graphics and Applications, 2007)

Integrating multimedia repositories into the PROBADO framework. - Ina Blümel; Jürgen Diet; Harald Krottmaier (ICDIM, 2008)

The PROBADO-Framework: Content-Based Queries for non-textual Documents. - Sven Havemann; Harald Krottmaier; René Berndt; Tobias Schreck (ELPUB, 2009)

Demonstration of User Interfaces for Querying in 3D Architectural Content in PROBADO3D. - René Berndt; Ina Blümel; Harald Krottmaier; Raoul Wessel; Tobias Schreck (ECDL, 2009)