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2. Cognitive function in Parkinson's disease: from description to theory;Brown, R.G.; Marsden, C.D.;Trends Neurosci,1990
3. Dual task performance and processing resources in normal subjects and patients with Parkinson's disease;Brown, R.G.; Marsden, C.D.;Brain,1991
4. Internal versus external cues and the control of attention in Parkinson's disease;Brown, R.G.; Marsden, C.D.;Brain,1988
5. Working memory;Baddeley, A.D.,1986