Kazem, Alaa, و Ehab Hussein. "The Effects of Single Deep Jump Training on Slopes on Selected Biomechanical Variables of the Triple Jump in Athletes Under 20 Years of Age". Journal of Physical Education 37, no. 4 (ديسمبر 28, 2025): 1220–1231. تاريخ الوصول يناير 3, 2026. https://www.jcope.uobaghdad.edu.iq/index.php/jcope/article/view/2181.