1. Aly N, Playfer J, Smith S, Halliday D (2007) A novel computer-based technique for the assessment of tremor in parkinson’s disease. Age Ageing 36(4):395–399
2. Bowie CR, Harvey PD (2006) Administration and interpretation of the trail making test. Nat Protoc 1:2277–2281
3. Cunningham H, Penney D, Davis R, Tanner J, Nguyen P, Schwab N, Malaty I, Okun MS, Bowers D, Libon DJ, Price CC (2012) Clock drawing in pd: what makes the clock drawing test tick? J Int Neuropsychol Soc, p 222
4. Eoff BD, Hammond T (2009) Who dotted that ‘i’?: context free user differentiation through pressure and tilt pen data. In: Proceedings of graphics interface 2009, GI’09. Canadian information processing society, Toronto, Ont, Canada pp 149–156
5. Hodges JR (2007) Cognitive Assessment for Clinicians, 2nd edn. Oxford University Press, Oxford