Lisovskaya, Tatiana Viktoryja. “The Dynamics of Growth of the Degree of Independence in Patients With Severe Multiple Disabilities (Personal Effectiveness)”. Przegląd Badań Edukacyjnych (Educational Studies Review) 1, no. 22 (November 2, 2016): 39–58. Accessed November 28, 2021. https://apcz.umk.pl/PBE/article/view/PBE.2015.060.