1. Bar-Haim R. , Dagan I. , Dolan B. , Ferro L. , Giampiccolo D. , Magnini B. , and Szpektor I. (eds.) 2006. Proceedings of the Second PASCAL Challenges Workshop on Recognising Textual Entailment.
2. Klein D. , and Manning C. D. 2003. Accurate unlexicalized parsing. In Proceedings of the 41st Meeting of the Association for Computational Linguistics, pp. 423–430.
3. Adams R. 2006. Textual entailment through extended lexical overlap. In Bar-Haim R. , Dagan I. , Dolan B. , Ferro L. , Giampiccolo D. , Magnini B. and Szpektor I. (eds.), Proceedings of the Second PASCAL Challenges Workshop on Recognising Textual Entailment, pp. 128–133.
4. Iftene A. , and Balahur-Dobrescu A. 2007. Hypothesis transformation and semantic variability rules used in Recognizing Textual Entailment. In Giampiccolo D. , Magnini B. , Dagan I. , Dolan B. and Pantel P. (eds.), Proceedings of the ACL-PASCAL Workshop on Textual Entailment and Paraphrasing, pp. 125–130.