N. Johri, D. Ramage, D. McFarland, and D. Jurafsky. Proceedings of the 5th ACL-HLT workshop on language technology for cultural heritage, social sciences, and humanities, page 124--132. Association for Computational Linguistics, (2011)
D. Ramage, D. Hall, R. Nallapati, and C. Manning. Proceedings of the 2009 Conference on Empirical Methods in Natural Language Processing: Volume 1 - Volume 1, page 248--256. Stroudsburg, PA, USA, Association for Computational Linguistics, (2009)