Experimental Study of the Larger Ball’s Effect on the Shock Vibrations at the Wrist joint during the ground stroke and at the Elbow Joint during the Service Stroke
Yoshihiko Kawazoe, Ryoso Tomosue, Tadashi Muramatsu, Keiko Yoshinari, and Hitoshi Yanagi,
International Tennis Federation ( ITF) Report (Part 2), pp.1-5, (2001.4)