Kilit, B., C. Arslan, F. Akçınar, and A. G. Rad. “A Notational Analysis of Elite men’s Tennis Matches”. Journal of Human Sciences, vol. 9, no. 2, Oct. 2012, pp. 1311-20, https://www.j-humansciences.com/ojs/index.php/IJHS/article/view/2221.