“THE USE OF A TECHNOLOGICAL SYSTEM OF MEASURE TO ANALYZE THE VARIABILITY IN THE EXECUTION OF TENNIS SERVICE AND THE EVALUATION OF ITS RESULT”, FIEP-Bulletinn, vol. 77, no. 1, Oct. 2014, Accessed: Sep. 06, 2025. [Online]. Available: https://ojs.fiepbulletin.net/fiepbulletin/article/view/4089