Takumi Osawa, Yoshihiro Tanaka, Toshimasa Yanai, Akihito Sano, Position estimation of ball impact in baseball batting using PVDF films, Proceedings of the 2017 IEEE World Haptics Conference, pp. 442 – 447, 2017, doi:10.1109/WHC.2017.7989942

Takumi Osawa, Yoshihiro Tanaka, Toshimasa Yanai, Akihito Sano, Position estimation of ball impact in baseball batting using PVDF films, Proceedings of the 2017 IEEE World Haptics Conference, pp. 442 – 447, 2017, doi:10.1109/WHC.2017.7989942