Ansari, Omid, Mahshid Zarezade, and Alireza Saberi Kakhaki. “Effect of Distance Increase of External Focus of Attention on Tracking Task Learning Under Secondary Task Condition”. International Journal of Sport Studies for Health 1, no. 2 (July 23, 2018): 17–22. Accessed July 7, 2024. https://journals.kmanpub.com/index.php/Intjssh/article/view/2069.