Sergey Brin and Lawrence Page, “The Anatomy of a Large-Scale Hypertextual Web Search Engine,” http://infolab.stanford.edu/~backrub/google.html (accessed April 3, 2008).
“comScore Releases 2008 U.S. Search Engine Rankings,” press release, comScore, February 21, 2008, http://www.comscore.com/press/release.asp?press=2068 (accessed April 3, 2008).
Matt Cutts, “Ramping Up on International Webspam,” Matt Cutts: Gadgets, Google, and SEO, February 4, 2006, http://www.mattcutts.com/blog/ramping-up-on-international-webspam (accessed June 1, 2008).
“Google Search’s Golden Triangle,” Eyetools, http://www.eyetools.com/inpage/research_google_eyetracking_heatmap.htm (accessed April 3, 2008).
“Relevance Meets the Real-Time Web,” Google, December 7, 2009, http://googleblog.blogspot.com/2009/12/relevance-meets-real-time-web.html (accessed June 23, 2010).
Chris Sherman, “A New F-Word for Google Results,” Search Engine Watch, March 8, 2005, http://searchenginewatch.com/showPage.html?page=3488076 (accessed April 3, 2008).
“Technology Overview,” Google, http://www.google.com/technology (accessed April 3, 2008).