E. Gabrilovich, and S. Markovitch. Proceedings of the 20th international joint conference on artificial intelligence, 6, page 12. Morgan Kaufmann Publishers Inc., (2007)
E. Gabrilovich, and S. Markovitch. IJCAI'07: Proceedings of the 20th international joint conference on Artifical intelligence, page 1606--1611. San Francisco, CA, USA, Morgan Kaufmann Publishers Inc., (2007)
S. Hassan, and R. Mihalcea. Proceedings of the 2009 Conference on Empirical Methods in Natural Language Processing: Volume 3-Volume 3, page 1192--1201. Association for Computational Linguistics, (2009)
D. Milne, and I. Witten. CIKM '08: Proceeding of the 17th ACM conference on Information and knowledge mining, page 509--518. New York, NY, USA, ACM, (2008)