author- Wirtschaftsinformatik (1997)
- NeuroImage 58(1):242-249 (2011)
- LAK, page 86-92. ACM, (2011)
- ICLS 3, page 206-213. International Society of the Learning Sciences, (2008)
- IEEE PACT, page 116-125. IEEE Computer Society, (1997)
- Minds and Machines 19(1):1-24 (2009)
- ACM Multimedia, page 215-218. ACM Press, (1997)
- ICLS, page 200-202. International Society of the Learning Sciences / ACM DL, (2010)
- ICLS 1, page 1127-1134. International Society of the Learning Sciences / ACM DL, (2010)
- Earth Science Informatics 4(4):161-167 (2011)
- Presence 12(4):335-345 (2003)
- IEEE T. Geoscience and Remote Sensing 43(6):1338-1350 (2005)
- First Monday (2005)
- IEEE Security & Privacy 5(1):45-52 (2007)
- Int. Sym. Wikis, ACM, (2009)
- Nano Letters 4(3):1305–1312 (2010)
- Proceedings of the 2011 annual conference on Human factors in computing systems, page 2887--2896. New York, NY, USA, ACM, (2011)
- The Mind's Eye, Elsevier, Amsterdam, (2003)
- CIBCB, page 1-6. IEEE, (2010)
- JCP 2(2):84-93 (2007)
