Syrmpas Ι., Goudas Μ., Digelidis Ν., and Papaioannou Α. “‘After School Exercise’: A Program to Promote Students Physical Activity ΙΙI. Students’ Knowledge Development”. Inquiries in Physical Education and Sport, vol. 18, no. 2, July 2020, pp. 106-15, https://journals.lib.uth.gr/index.php/inquiries/article/view/1545.