[1]
S. L. LAI and J. C. SU, “The Influence on Tennis Serve Performance between the Groups of National Players and Non-national Players in terms of with/without Audiences and with/without Receivers: 有無觀衆在場與有無人接發球對國手與非國手發球表現的影響”, ajper, vol. 9, no. 1, pp. 44–49, Jun. 2003.