Azzopardi, L., Kazai, G., Robertson, S., R<U+00fc>ger, S., Shokouhi, M., Song, D., & Yilmaz, E. (2009). Advances in Information Retrieval Theory: Second International Conference on the Theory of Information Retrieval, ICTIR 2009 Cambridge, UK, September 10-12, 2009 Proceedings. Berlin, Heidelberg: Springer Berlin Heidelberg.

Azzopardi, Leif., Gabriella Kazai, Stephen Robertson, Stefan R<U+00fc>ger, Milad Shokouhi, Dawei Song, and Emine Yilmaz. Advances in Information Retrieval Theory: Second International Conference On the Theory of Information Retrieval, ICTIR 2009 Cambridge, UK, September 10-12, 2009 Proceedings. Berlin, Heidelberg: Springer Berlin Heidelberg, 2009.

Azzopardi, Leif., et al. Advances in Information Retrieval Theory: Second International Conference On the Theory of Information Retrieval, ICTIR 2009 Cambridge, UK, September 10-12, 2009 Proceedings. Berlin, Heidelberg: Springer Berlin Heidelberg, 2009.