S. Bloehdorn, und A. Moschitti. CIKM '07: Proceedings of the sixteenth ACM conference on Conference on information and knowledge management, Seite 861--864. New York, NY, USA, ACM, (2007)
Y. Pan, Y. Tang, L. Lin, und Y. Luo. SIGIR '08: Proceedings of the 31st annual international ACM SIGIR conference on Research and development in information retrieval, Seite 837--838. New York, NY, USA, ACM, (2008)
X. Li, und D. Roth. Proceedings of the 19th international conference on Computational linguistics, Seite 1--7. Morristown, NJ, USA, Association for Computational Linguistics, (2002)