طلال محمد الراوي, and سعد فاضل عبد القادر الحمداني. “Calculating Stability of Some Motor Features Using Re-Test Based on Physical Cycle of Biorhythm ( Comparative Study )”. College of Basic Education Research Journal, vol. 21, no. 3, Sept. 2025, pp. 509-25, doi:10.33899/berj.2025.Vol21.Iss3.53540.