- ICCBR, volume 6880 of Lecture Notes in Computer Science, page 363-377. Springer, (2011)
- Inf. Syst. J. 22(1):77-94 (2012)
- ICME, page 1-6. IEEE, (2011)
- ICDE, page 104. IEEE Computer Society, (1998)
- ICLS 2, page 507-515. International Society of the Learning Sciences, (2008)
- ICLS 2, page 295-302. International Society of the Learning Sciences, (2008)
- ICLS 2, page 351-358. International Society of the Learning Sciences, (2008)
- ICLS 2, page 213-220. International Society of the Learning Sciences, (2008)
- ICLS 3, page 330-331. International Society of the Learning Sciences, (2008)
- AMCIS, page 376. Association for Information Systems, (2003)
- AMCIS, page 126. Association for Information Systems, (2003)
- AMCIS, page 538. Association for Information Systems, (2004)
- AMCIS, page 17. Association for Information Systems, (2005)
- AMCIS, page 242. Association for Information Systems, (2006)
- Minds and Machines 19(2):297-299 (2009)
- ICIS, page 175. Association for Information Systems, (2008)
- dpunkt.verlag, Heidelberg, (May 2007)
- ICIS, page 144. Association for Information Systems, (2010)
- J. Comput. Science 2(1):9-17 (2011)
- ICLS, page 421-422. International Society of the Learning Sciences / ACM DL, (2010)


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