1. Depression in Parkinson's disease: a biochemical model;Sano, M.; Stern, Y.; Cote, L.; Williams, J.B.; Mayeux, R.;J Neuropsychiatry,1990
2. Depression in Parkinson's disease: reconciling physiological and psychological perspectives;Taylor, A.E.; Saint-Cyr, J.A.;J Neuropsychiany,1990
3. Intellectual impairment in Parkinson's disease;Stern, Y.; Mayeux, R.;Adv Neurol,1986
4. Cognitive function in Parkinson's disease: from description to theory;Brown, R.G.; Marsden, C.D.;TINS,1990
5. Lieberman A, Dziatolowski M, Kupersmith M, Serby M, Goodgold A, Korein J, Goldstein M. Dementia in Parkinson's disease. Ann Neurol 1979;6:355-9.