1. Aggarwal, C., Al-Garawi, F., Yu, P.: Intelligent Crawling on the World Wide Web with Arbitrary Predicates. In: Proceedings of the 10th International WWW Conference, Hong Kong, May 2001, pp. 96–105 (2001)
2. Brin, S., Page, L.: The Anatomy of a Large-Scale Hypertextual Web Search Engine. In: The Proceedings of the Seventh International WWW Conference, Brisbane, April 1998, pp. 107–117 (1998)
3. Chakrabarti, S., van den Berg, M., Dom, B.: Focused Crawling: A New Approach to Topic-Specific Web Resource Discovery. In: Proceedings of the 8th International WWW Conference, Toronto, Canada, May 1999, pp. 545–562 (1999)
4. CROSS-lingual Multi Agent Retail Comparison,
http://www.iit.demokritos.gr/skel/crossmarc
5. Karkaletsis, V., Paliouras, G., Stamatakis, K., Pazienza, M.-T., Stellato, A., Vindigni, M., Grover, C., Horlock, J., Curran, J., Dingare, S.: Report on the techniques used for the collection of product descriptions, CROSSMARC Project Deliverable D1.3 (2003)