The blue social bookmark and publication sharing system.
Sven Overhage, and Peter Thomas. Web, Web-Services, and Database Systems, volume 2593 of Lecture Notes in Computer Science, page 100-119. Springer, (2002)
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.