M. Shaker, H. Ibrahim, A. Mustapha, and L. Abdullah. Proceedings of the 11th International Conference on Information Integration and Web-based Applications & Services, page 470--476. New York, NY, USA, ACM, (2009)
W. Gatterbauer, and P. Bohunsky. Proceedings of the 21st National Conference on Artificial Intelligence - Volume 2, page 1313--1318. AAAI Press, (2006)
E. Schwarzkopf, M. Bauer, and D. Dengler. Proceedings of the 7th international conference on Intelligent user interfaces, page 220--221. New York, NY, USA, ACM, (2002)
E. Schwarzkopf, M. Bauer, and D. Dengler. Proceedings of the 8th international conference on Intelligent user interfaces, page 287--289. New York, NY, USA, ACM, (2003)
A. Tengli, Y. Yang, and N. Ma. Proceedings of the 20th international conference on Computational Linguistics, Stroudsburg, PA, USA, Association for Computational Linguistics, (2004)