1. Baeza-Yates RA, Castillo C, Junqueira F, Plachouras V, Silvestri F. Challenges on distributed web retrieval. In: Proceeding of 23rd International Conference on Data Engineering; 2007. p. 6–20.
2. Barroso LA, Dean J, Hölzle U. Web search for a planet: the Google cluster architecture. IEEE Micro. 2003;23(2):22–8.
3. Bender M, Michel S, Parreira JX, Crecelius T. P2P web search: make it light, make it fly. In: Proceeding of 3rd Biennial Conference on Innovative Data Systems Research; 2007. p. 164–8.
4. Callan JP, Lu Z, Croft WB. Searching distributed collections with inference networks. In: Proceeding of 18th Annual Interntional ACM SIGIR Conference on Research and Development in Information Retrieval; 1995. p. 21–8.
5. Crespo A, Garcia-Molina H. Semantic overlay networks for P2P systems. In: Proceeding of 3rd International Workshop Agents and Peer-to-Peer Computing; 2004, p. 1–13.