R. Timofejavaitė, V. Vilda, A. Liveikienė, and R. Kaladytė-Lokominienė, “Disturbances of visual perception in non-demented patients with Parkinson’s disease”, NS, vol. 23, no. 3(81), pp. 154–163, Sep. 2019, doi: 10.29014/ns.2019.21.