The blue social bookmark and publication sharing system.
Mohsen Rouached, Walid Gaaloul, Wil M. P. van der Aalst, Sami Bhiri, and Claude Godart. OTM Conferences (1), volume 4275 of Lecture Notes in Computer Science, page 2. Springer, (2006)
BibSonomy is offered by the KDE group of the University of Kassel, the DMIR group of the University of Würzburg, and the L3S Research Center, Germany.