ЛитвиноваА.С. and БогдановР.Р. 2015. Letter Cancellation Test Performance in Healthy Subjects and Patients with Parkinson’s Disease during Aging (in Russian). Psychology. Journal of the Higher School of Economics. 12, 4 (Dec. 2015), 142-153. DOI:https://doi.org/10.17323/1813-8918-2015-4-142-153.