Primary Central Nervous System Lymphoma: Presentation, Diagnosis, and Staging
Neurosurg Focus 21:e16, Eichler, A.F. & Batchelor, T.T., 2006
Acute Leukoencephalopathies:Differential Diagnosis and Investigation
The Neurologist 4:148-166, Weinshenker,B.G.,et al, 1998