Syrmpas Ιωάννης, Goudas Μάριος, Digelidis Νικόλαος, and Papaioannou Αθανάσιος. 2020. “‘After School Exercise’: A Program to Promote Students Physical Activity ΙΙI. Students’ Knowledge Development”. Inquiries in Physical Education and Sport 18 (2):106-15. https://journals.lib.uth.gr/index.php/inquiries/article/view/1545.