Siminska, J., Nowacka, K., Grzyb, S., Szostak, M., Hagner-Derengowska, M., & Hagner, W. (2019). Whitener pain - characteristic and fracture. Journal of Education, Health and Sport, 9(2), 325–333. Retrieved from https://apcz.umk.pl/JEHS/article/view/6619