Syrmpas Ιωάννης, Goudas Μάριος, Digelidis Νικόλαος, and Papaioannou Αθανάσιος. 2020. “‘After School Exercise’: A Program to Promote Students Physical Activity ΙΙI. Students’ Knowledge Development (Short Version of a Greek Article)”. Inquiries in Physical Education and Sport 18 (2):116-23. https://doi.org/10.26253/heal.uth.ojs.ispe.2020.1546.