| Titel | ISBN-13 (ISBN-10) | Erschei- nungsjahr | andere Autoren |
|---|---|---|---|
| Information and Communication Technologies in Tourism 2008: Proceedings of the International Conference in Innsbruck, Austria, 2008 | 978-3-211-77279-9 (3-211-77279-0) | 2008 | Peter O'Connor · Ulrike Gretzel |
| Information and Communication Technologies in Tourism 2009: Proceedings of the International Conference in Amsterdam, The Netherlands, 2009 | 978-3-211-93970-3 (3-211-93970-9) | 2009 | Ulrike Gretzel · Rob Law |