Syrmpas Ιωάννης, and Goudas Μάριος. 2020. “‘After School Exercise’: A Program to Promote Students’ Physical Activity IV. Physical Education Teachers’ Perceptions of the Program”. Inquiries in Physical Education and Sport 18 (2):124-33. https://doi.org/10.26253/heal.uth.ojs.ispe.2020.1547.