Tag Recommendations in Social Bookmarking Systems.
AI Communications, 21(4):231-247, 2008.
Robert Jäschke, Leandro Marinho, Andreas Hotho, Lars Schmidt-Thieme und Gerd Stumme.
[doi]  [Kurzfassung]  [BibTeX] 
The Structure of Collaborative Tagging Systems.
2005.
Scott Golder und Bernardo A. Huberman.
[doi]  [BibTeX]