S. Dori-Hacohen, и J. Allan. Proceedings of the 22nd ACM international conference on Conference on information &\#38; knowledge management, стр. 1845--1848. New York, NY, USA, ACM, (2013)
D. Jurafsky, и J. Martin. Prentice Hall series in artificial intelligence Prentice Hall, Pearson Education International, London u.a., 2. ed., Pearson International Edition издание, (2009)
J. Nothman, T. Murphy, и J. Curran. EACL '09: Proceedings of the 12th Conference of the European Chapter of the Association for Computational Linguistics, стр. 612--620. Morristown, NJ, USA, Association for Computational Linguistics, (2009)