1. Intellectual and cognitive function in Parkinson's disease;Reitan, R.M.; Boll, T.J.;J Consult Clin Psychol,1971
2. Levodopa's awakening effect on patients with Parkinsonism;Marsh, G.G.; Markham, C.M.; Ansel, R.;J Neurol Neurosurg Psychiatry,1971
3. Some psychological factors in Parkinsonism;Horn, S.;J Neurol Neurosurg Psychiatry,1974
4. Cognitive deficits associated with chronic hepatic encephalopathy and their response to levodopa;Elithorn, A.; Lunzer, M.; Weinman, J.;J Neurol Neurosurg Psychiatry,1975
5. Short and Long Range studies of Memory Intelligence and Perception in Parkinsonian patients treated with Levodopa;Siegfried, J.;Parkinson's Disease: Rigidity, Akinesia and Behavior,1973