Hiro, T., Ishii, T., Tomioka, T., Morita, Y., & Yamamoto, T. (1997). The charactaristic of H-shape sport's mouth guard on athlete's physical capacity - part II: Effect on the leg power and golf performance. Japanese journal of physical fitness and sports medicine, 46(5), S. 445-451.

Hiro, T., T. Ishii, T. Tomioka, Y. Morita, and T. Yamamoto. "The charactaristic of H-shape sport's mouth guard on athlete's physical capacity - part II: Effect on the leg power and golf performance." Japanese journal of physical fitness and sports medicine 46, no. 5 (1997): S. 445-451.

Hiro, T., et al. "The charactaristic of H-shape sport's mouth guard on athlete's physical capacity - part II: Effect on the leg power and golf performance." Japanese journal of physical fitness and sports medicine 46.5 (1997): S. 445-451.