A. Kupryjaniuk, M. . Sobstyl, and T. Pietras, “Quality of life, cognitive deficits and depression in Parkinson’s disease: Quality of life, cognitive deficits and depression in Parkinson’s disease”, FeR, vol. 44, no. 4, pp. 314–321, Dec. 2020, doi: 10.34766/fetr.v44i4.434.