[Jäschke et al. 2009] Jäschke, R., Eisterlehner, F., Hotho, A. and Stumme, G.: "Testing and Evaluating Tag Recommenders in a Live System"; RecSys '09: Proceedings of the 2009 ACM Conference on Recommender Systems, ACM, New York, NY, USA, (to appear) (2009).

[Rendle and Schmidt-Thieme 2009] Rendle, S. and Schmidt-Thieme, L.: "Factor Models for Tag Recommendation in BibSonomy" Eisterlehner, F., Hotho, A. and Jäschke, R., eds.; ECML PKDD Discovery Challenge 2009 (DC09), CEUR Workshop Proceedings, Bled, Slovenia (2009), 235--242.