Mourtzios, Christos, Ioannis Athanailidis, Eleftherios Kellis, and Vasileia Arvanitidou. “Kinematic Differences Between Professionals and Young Players in the Tennis Serve”. ITF Coaching & Sport Science Review 29, no. 83 (April 30, 2021): 25–27. Accessed April 29, 2024. https://itfcoachingreview.com/index.php/journal/article/view/52.