Demchenko, A. V., and V. V. Biriuk. “Psychoemotional and Cognitive Characteristics in Patients at the Early Stages of Parkinson’s Disease”. Zaporozhye Medical Journal 22, no. 2 (April 13, 2020). Accessed May 20, 2024. http://zmj.zsmu.edu.ua/article/view/200630.