1. Baumgartner, R., Flesca, S., Gottlob, G.: Visual web information extraction with Lixto. In: Proc. of VLDB (2001)
2. Baumgartner, R., Herzog, M., Gottlob, G.: Visual programming of web data aggregation applications. In: Proc. of IIWeb 2003 (2003)
3. Flesca, S., Manco, G., Masciari, E., Rende, E., Tagarelli, A.: Web wrapper induction: a brief survey. AI Communications 17/2 (2004)
4. Gottlob, G., Koch, C.: Monadic datalog and the expressive power of languages for Web Information Extraction. In: Proc. of PODS (2002)
5. Henze, N., Herrlich, M.: The Personal Reader: A Framework for Enabling Personalization Services on the Semantic Web. In: Proceedings of the Twelfth GIWorkshop on Adaptation and User Modeling in Interactive Systems (ABIS 2004), Berlin, Germany (2004)