Integrating Electronic Institutions with 3D Virtual Worlds. - Ingo Seidel; Helmut Berger (IAT, 2007)

Agent mediated trading in a 3D e-tourism environment. - Markus Gärtner; Ingo Seidel; Helmut Berger (ICEC, 2008)

Online Tourism Communities on the Path to Web 2.0: An Evaluation. - Birgit Dippelreiter; Christoph Grün; Michael Pöttler; Ingo Seidel; Helmut Berger; Michael Dittenbach; Andreas Pesenhofer (J. Inf. Technol. Tour., 2008)

An Agent-based Centralized e-Marketplace in a Virtual Environment. - Ingo Seidel; Markus Gärtner; Josef Froschauer; Helmut Berger; Dieter Merkl (SEKE, 2009)

The formation of virtual organizations by means of electronic institutions in a 3D e-Tourism environment. - Markus Gärtner; Ingo Seidel; Josef Froschauer; Helmut Berger (Inf. Sci., 2010)