A Light-Weight Framework for Location-Based Services. - Wieland Schwinger; Christoph Grün; Birgit Pröll; Werner Retschitzegger (OTM Workshops, 2005)

Pinpointing Tourism Information onto Mobile Maps - A Light-Weight Approach. - Wieland Schwinger; Christoph Grün; Birgit Pröll; Werner Retschitzegger; Hannes Werthner (ENTER, 2006)

A Survey of B2B Methodologies and Technologies: From Business Models towards Deployment Artifacts. - Jürgen Dorn; Christoph Grün; Hannes Werthner; Marco Zapletal (HICSS, 2007)

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)

Covering the semantic space of tourism: an approach based on modularized ontologies. - Robert Barta; Christina Feilmayr; Birgit Pröll; Christoph Grün; Hannes Werthner (CIAO@ESWC, 2009)

From business to software: a B2B survey. - Jürgen Dorn; Christoph Grün; Hannes Werthner; Marco Zapletal (Inf. Syst. E Bus. Manag., 2009)

eBusiness. - Christoph Grün; Christian Huemer; Philipp Liegl; Dieter Mayrhofer; Thomas Motal; Rainer Schuster; Hannes Werthner; Marco Zapletal (Handbook of Semantic Web Technologies, 2011)

Ontology-Based Matchmaking to Provide Personalized Recommendations for Tourists. - Christoph Grün; Julia Neidhardt; Hannes Werthner (ENTER, 2017)