Bibliography
http://www.telegraph.co.uk/technology/news/8592677/Wimbledon-2011-the-top-five-tennis-technologies.html
http://www.express.co.uk/entertainment/gaming/484242/WIMBLEDON-SPECIAL-How-technology-is-changing-the-face-of-tennis
http://www.complex.com/pop-culture/2013/06/the-20-biggest-tech-advancements-in-sports-history/steroids
https://blue.utb.edu/jloff/1127/ch1/ch1.htm
http://www.popularmechanics.com/adventure/sports/a6070/the-physics-of-tennis-racket-strings/
http://www.digitalspy.com.au/tech/feature/a580265/wimbledon-2014-how-technology-is-revolutionising-tennis.html#~p8hgd1FNtMKouT
http://en.wikipedia.org/wiki/Radar_gun
http://en.wikipedia.org/wiki/Hawk-Eye
http://www.hawkeyeinnovations.co.uk/page/sports-officiating/tennis
http://www.topendsports.com/sport/tennis/hawkeye.htm
http://en.wikipedia.org/wiki/Electronic_line_judge
http://www.express.co.uk/entertainment/gaming/484242/WIMBLEDON-SPECIAL-How-technology-is-changing-the-face-of-tennis
http://www.complex.com/pop-culture/2013/06/the-20-biggest-tech-advancements-in-sports-history/steroids
https://blue.utb.edu/jloff/1127/ch1/ch1.htm
http://www.popularmechanics.com/adventure/sports/a6070/the-physics-of-tennis-racket-strings/
http://www.digitalspy.com.au/tech/feature/a580265/wimbledon-2014-how-technology-is-revolutionising-tennis.html#~p8hgd1FNtMKouT
http://en.wikipedia.org/wiki/Radar_gun
http://en.wikipedia.org/wiki/Hawk-Eye
http://www.hawkeyeinnovations.co.uk/page/sports-officiating/tennis
http://www.topendsports.com/sport/tennis/hawkeye.htm
http://en.wikipedia.org/wiki/Electronic_line_judge