Inproceedings (jaschke07recommender)
Jäschke, R.; Marinho, L. B.; Hotho, A.; Schmidt-Thieme, L. & Stumme, G.
Kok, J. N.; Koronacki, J.; de Mántaras, R. L.; Matwin, S.; Mladenic, D. & Skowron, A. (ed.)
Tag Recommendations in Folksonomies
Springer, 2007, 4702, 506-514

Inproceedings (hotho2006information)
Hotho, A.; Jäschke, R.; Schmitz, C. & Stumme, G.
Information Retrieval in Folksonomies: Search and Ranking
Springer, 2006, 4011, 411-426