Yahoo! Native (English Wikipedia)

Pay-for-placement gets another shot, Jeff Pelline, CNET News.com, February 19, 1998
Yahoo reports profit on higher revenue, Jim Hu, CNET News.com, October 9, 2002 - estimating that Overture contributed $25 million to Yahoo's revenue in Q3 2002
Overture sues Google over search patent, Stefanie Olsen and Gwendolyn Mariano, CNet news.com, April 5, 2002
Yahoo clamps down on Claria adware, Stefanie Olsen, CNET News.com, August 6, 2004

cbslocal.com

Google, Yahoo bury the legal hatchet, Stefanie Olsen, CNET News.com, August 9, 2004

US 6269361, Davis, Darren J.; Derer, Matthew & Garcia, Johann et al., "System and method for influencing a position on a search result list generated by a computer network search engine", published 2001-07-31, assigned to GoTo.com

Helft, Miguel (2007-02-05). "A Long-Delayed Ad System Has Yahoo Crossing Its Fingers". The New York Times. Retrieved 2010-05-21.

Overture and Gator Archived 2006-10-16 at the Wayback Machine summary of the agreement and objections by pcpitstop.com
Yahoo and Claria Archived 2007-02-02 at the Wayback Machine analysis by pcpitstop.com

Elesseily, Mona (2007-02-05). "New Panama Ranking System For Yahoo Ads Launches Today". Search Engine Land. Retrieved 2015-01-18.

GoTo Going Strong Archived 2006-10-21 at the Wayback Machine, Danny Sullivan, The Search Engine Report, July 1, 1998[1]

"GoTo: The Forgotten Search Engine". 1998-02-19. Archived from the original on 2019-01-20. Retrieved 2019-01-19.

GoTo Going Strong Archived 2006-10-21 at the Wayback Machine, Danny Sullivan, The Search Engine Report, July 1, 1998[1]
"GoTo: The Forgotten Search Engine". 1998-02-19. Archived from the original on 2019-01-20. Retrieved 2019-01-19.
"History of Search Engines: From 1945 to Google Today". Archived from the original on 2017-12-30. Retrieved 2019-01-19.
"GoTo.com – The Original PPC Search Engine Launches New, Organic Web Search". Archived from the original on 2019-01-20. Retrieved 2019-01-19.
GoTo Makes Overture To New Name Danny Sullivan, The Search Engine Report, October 2, 2001
Yahoo to Acquire Overture Archived 2007-07-08 at the Wayback Machine Yahoo press release, July 14, 2003
"Yahoo! Inc. - Company Timeline". Wayback Machine. 2008-07-13. Archived from the original on 2008-07-13. Retrieved 2016-07-19.{{cite web}}: CS1 maint: bot: original URL status unknown (link)
Overture and Gator Archived 2006-10-16 at the Wayback Machine summary of the agreement and objections by pcpitstop.com
Yahoo and Claria Archived 2007-02-02 at the Wayback Machine analysis by pcpitstop.com

GoTo Going Strong Archived 2006-10-21 at the Wayback Machine, Danny Sullivan, The Search Engine Report, July 1, 1998[1]

Yahoo to Acquire Overture Archived 2007-07-08 at the Wayback Machine Yahoo press release, July 14, 2003