search- WSDM, page 261-270. ACM, (2010)
- ICWSM, The AAAI Press, (2011)
- AAAI/IAAI, page 827. AAAI Press / The MIT Press, (1997)
- AAAI/IAAI, page 477-484. AAAI Press / The MIT Press, (1998)
- AAAI/IAAI, page 1189. AAAI Press / The MIT Press, (1998)
- ACM Comput. Surv. (February 2009)
- Proceedings of the 15th ACM international conference on Information and knowledge management, page 228--237. New York, NY, USA, ACM, (2006)
- WSDM, page 81-90. ACM, (2010)
- ACM Comput. Surv. (February 2009)
- WSDM, page 261-270. ACM, (2010)
- CIKM, page 2193-2196. ACM, (2011)
- CIKM, page 1163-1168. ACM, (2011)
- Online Information Review (2011)
- IEEE Internet Computing 5(4):38-45 (2001)
- TREC, Special Publication 500-278, National Institute of Standards and Technology NIST, (2009)
- WSDM, page 91-100. ACM, (2010)
- KDD, page 484-492. ACM, (2011)
- AAAI, AAAI Press, (2011)
- SIGIR, page 1241-1242. ACM, (2011)
- SIGIR, page 95-104. ACM, (2011)
