Doerfel, S. & Jäschke, R. (2013). An analysis of tag-recommender evaluation procedures. Proceedings of the 7th ACM conference on Recommender systems (p./pp. 343--346), New York, NY, USA: ACM. ISBN: 978-1-4503-2409-0

Landia, N., Doerfel, S., Jäschke, R., Anand, S. S., Hotho, A. & Griffiths, N. (2013). Deeper Into the Folksonomy Graph: FolkRank Adaptations and Extensions for Improved Tag Recommendations. cs.IR, 1310.1498.