Abdullah, A., N. Abdullah, and A. Qasim. “The Impact of Repeated Anaerobic Effort in The Anaerobic Capability and the Fatigue Indicator of Basketball, Volleyball and SOCCER Players”. Al-Rafidain Journal For Sport Sciences, vol. 16, no. 55, Dec. 2010, pp. 1-10, doi:10.33899/rajsport.2010.6114.