D. Ramage, A. Rafferty, и C. Manning. Proceedings of the 2009 Workshop on Graph-based Methods for Natural Language Processing, стр. 23--31. Stroudsburg, PA, USA, Association for Computational Linguistics, (2009)
C. Khoo, S. Chan, и Y. Niu. ACL '00: Proceedings of the 38th Annual Meeting on Association for Computational Linguistics, стр. 336--343. Morristown, NJ, USA, Association for Computational Linguistics, (2000)