Abdollahipour, R., and R. Psotta. “IS AN EXTERNAL FOCUS OF ATTENTION MORE BENEFICIAL THAN AN INTERNAL FOCUS TO BALL CATCHING IN CHILDREN?”. Kinesiology, vol. 49, no. 2, May 2017, pp. 235-41, https://hrcak.srce.hr/ojs/index.php/kinesiology/article/view/5701.