Wilczyński, Jacek, Przemysław Karolak, and Sylwia Janecka. 2018. “Anthropometric Variables and Body Composition and SEMG Frequency of the Spine Rectifier in Children With Scoliosis and Scoliotic Posture”. Journal of Education, Health and Sport 8 (12):558-74. https://apcz.umk.pl/JEHS/article/view/6413.