Blatsis Π., Saraslanidis Π., Barkoukis Β., Manou Β., Tzavidas Κ., Hatzivasiliou Χ., and Palla Σ. “The Implementation of IAAF Kids Athletics in Elementary Schools: Can It Enhance the Student’s Motivation to Participate in Physical Education and Improve Their Physical Performance?”. Inquiries in Physical Education and Sport, vol. 13, no. 3, Dec. 2015, pp. 22-36, doi:10.26253/heal.uth.ojs.ispe.2015.1460.