Poleszak, Julita, Przemysław Szabat, Marta Szabat, Grzegorz Boreński, Magdalena Wójcik, and Joanna Milanowska. “Biofeedback in Psychiatric and Psychological Clinical Practice”. Journal of Education, Health and Sport 9, no. 5 (May 26, 2019): 346–353. Accessed March 31, 2025. https://apcz.umk.pl/JEHS/article/view/6932.