Effect of Notched Strings on Tennis Racket Spin Performance

Effect of Notched Strings on Tennis Racket Spin Performance:
Ultrahigh-Speed Video Analysis of Spin Rate,
Contact Time, and Post-Impact Ball Velocity
Yoshihiko KAWAZOE , Yukihiro TAKEDA and Masamichi NAKAGAWA, Journal of System Design and Dynamics, Vol.6, No.2, pp.213-226, (2012)

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