| 
                     Allain, Rhett.
                        "The Curving Soccer Ball." Wired.com. Conde Nast
                        Digital, 05 Sept. 2010. Web. 26 Nov. 2013. 
                    Asal, Takeshi.
                        "The Physics of Football." Physics
                        World 01
                        June 1998: 25-28.Physicsworld.com
                        Homepage. 01 June 1998.
                        Web. 26 Nov. 2013.
<http://physicsworld.com/cws/article/print/1998/jun/01/the-physics-of-football>. 
                    Drums 787. "How
                        to Bend It Like Beckham." Instructables.com. N.p., n.d.
                        Web. 26 Nov. 2013. 
                      Goff, John
                        Eric. Gold
                        Medal Physics: The Science of Sports. Baltimore,
                        MD: Johns Hopkins UP, 2010. Print. 
                      Passing It On." Passing
                        It On: A History of Soccer. http://www.randomhistory.com,
                        26 June 2008. Web. 26 Nov. 2013. 
                     
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