The blue social bookmark and publication sharing system.
Johannes Hummel, Robin Wolff, Tobias Stein, Andreas Gerndt, and Torsten Kuhlen. ISVC (2), volume 7432 of Lecture Notes in Computer Science, page 346-357. Springer, (2012)
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.