Hand Contractures in Parkinson's DiseaseJNNP 51:1221-1223, Kyriakides,T.&Hewer,R.L., 1988
Parkinson's DiseaseIn Handbk of Clinical Neurology, Vinken, P. J. & Bruyn, G. W. , Ed, North-Holland Publ Co, Amsterdam, 6:173, 1968. Selby, G., 1968