Faiçal, Houafi, and Mustapha Cherif Bourenane. “Studying The Validity And Reliability Of A Proposed Field Test (y) To Measure The Two Physical Attributes, Speed And Agility ”. Journal of Sport Science Technology and Physical Activities, vol. 19, no. 1, June 2022, pp. 25-43, https://revue.univ-mosta.dz/index.php/jsstpa/article/view/220.