author- USAB, page 19-48. Austrian Computer Society, (2006)
- EC-TEL, volume 5794 of Lecture Notes in Computer Science, page 52-66. Springer, (2009)
- Learning in the Synergy of Multiple Disciplines, Proceedings of the EC-TEL 2009, volume 5794 of Lecture Notes in Computer Science, Berlin/Heidelberg, Springer, (October 2009)
- Mobile HCI, volume 309 of ACM International Conference Proceeding Series, page 507-514. ACM, (2007)
- DEXA Workshops, page 94-98. IEEE Computer Society, (2007)
- HCI 7, volume 4556 of Lecture Notes in Computer Science, page 647-656. Springer, (2007)
- HCI 1, volume 4550 of Lecture Notes in Computer Science, page 1216-1225. Springer, (2007)
- CELDA, page 503-508. IADIS, (2005)
- ICALT, page 537-539. IEEE Computer Society, (2006)
- Informatik für den Umweltschutz, volume 256 of Informatik-Fachberichte, page 216-225. Springer, (1990)
- Konzeption und Einsatz von Umweltinformationssystemen, volume 301 of Informatik-Fachberichte, page 379-401. Springer, (1990)
- Essen Symposium, page 29-54. (1984)
- ECDL, volume 1923 of Lecture Notes in Computer Science, page 506-510. Springer, (2000)
