1[1]Google Web APIs Reference[EB/OL] .http://www.google.com/apis/refence.html,2004.
2[2]SERGEY BRIN; LAWRENCE PAGE. The Anatomy of a Large-Scale Hypertextual Web Search Engine[ A]. Proceedings of the 7th World Web Conference(WWW7) [ C] .Brisbane,Australia, 1998.
3[3]LUIZ ANDRE BARROSO, JEFFERY DEAN, URS HOLZLE, Web Search for a Planet: The Google Cluster Architecture [ J].Google , IEEE Micro. ,2003,03.
4[5]CHOON HOONG DING, RAJKUMAR BUYYA. Guided Google: A Meta Search Engine and its Implementation using the Google Distributed Web Services[ EB/OL]. http://www. gridbus. org, 2004.