1. Supratentorial intracerebral epithelial (ependymal) cysts: review, case reports and fine structure;Friede, R.L.; Yasargil, M.G.;Neurol Neurosurg Psychiatry,1977
2. Biochemical findings in a case of parkinsonism secondary to brain tumor;de Yebenes GJ; JJ, Gervas; J, Iglesias;Ann Neurol,1981
3. Involuntary movements;Liversedge, L.A.,1969
4. Movement disorder symptomatology;Lang, A.E.,1991