R. Bunescu, и R. Mooney. Proceedings of the conference on Human Language Technology and Empirical Methods in Natural Language Processing, стр. 724--731. Stroudsburg, PA, USA, Association for Computational Linguistics, (2005)
F. Reichartz, H. Korte, и G. Paass. Proceedings of the ACL-IJCNLP 2009 Conference Short Papers, стр. 365--368. Suntec, Singapore, Association for Computational Linguistics, (августа 2009)