1. Bouckaert, R.: Low level information extraction. In: Proceedings of the workshop on Text Learning (TextML 2002), Sydney, Australia (2002)
2. Cowie, J., Lehnert, W.: Information Extraction. Communications of the ACM 39(1), 80–91 (1996)
3. Freitag, D.: Machine Learning for Information Extraction in Informal Domains. Ph.d. thesis, Computer Science Department, Carnegie Mellon University (1998)
4. Hobbs, J.R.: The Generic Information Extraction System. In: Proceedings of the Fifth Message Understanding Conference (1993)
5. Kushmerick, N., Johnston, E., McGuinness, S.: Information Extraction by Text Classification. In: Kushmerick, N. (ed.) Seventeenth International Join Conference on Artificial Intelligence (IJCAI 2001), Adaptive Text Extraction and Mining (Working Notes), Seattle, Washington, pp. 44–50 (2001)