Nikodelis Θ., Papacharisis Β., Ntambakis Β., Misailidis Κ., and Papargyriou Α. “Planning, Application and Evaluation of a Swimming Teaching Program in the Primary School”. Inquiries in Physical Education and Sport, vol. 12, no. 2, May 2014, pp. 120-3, doi:10.26253/heal.uth.ojs.ispe.2014.1425.