1. Depression, intellectual impairment and Parkinson's disease;Mayeux, R.; Stem, Y.; Rosen, J.; Leventhal, J.;Neurology,1981
2. Intellectual impairment in Parkinson's disease;Stem, Y.; Mayeux, R.;Adv Neurol,1986
3. Psychometric findings in clinical subtypes of Parkinson's disease;Ransmayr, G.; Poewe, W.; Ploerer, S.; Birbamer, G.; Gerstenbrand, F.;Adv Neurol,1986
4. Cognitive slowing in Parkinson's disease fails to respond to levodopa treatment: the 15-objects test;Pillon, B.; Dubois, B.; Bonnet, A.M.;Neurology,1989
5. Temporal ordering and short-term memory deficits in Parkinson's disease;Sagar, H.J.; Sullivan, E.V.; Gabrieli, J.D.E.; Corkin, S.; Growdon, J.H.;Brain,1988