Taha AL Hajjar, Y., Samer Hamou, O., & Hamdoon Alhiyali, M. (2018). The impact of mandatory technical exercises in a number of physical functional Biochemical variables for beginner football player. Al-Rafidain Journal For Sport Sciences, 21(67), 175–203. https://doi.org/10.33899/rajsport.1970.162982