D. Downey, S. Dumais, D. Liebling, and E. Horvitz. Proceeding of the 17th ACM conference on Information and knowledge management, page 449--458. New York, NY, USA, ACM, (2008)
D. Downey, S. Dumais, D. Liebling, and E. Horvitz. CIKM '08: Proceeding of the 17th ACM conference on Information and knowledge mining, page 449--458. New York, NY, USA, ACM, (2008)