Primary Lymphoma of the Central Nervous System: Typical and Atypical CT and MR Imaging Appearances
AJR 176:1319-1326, Erdag,N.,et al, 2001
Melatonin"A Clinical Perspective
Ann Neurol 42:545-553, Penev,P.D.,et al, 1997
MR Imaging of Pineal Tumors
AJR 155:143-151, Tien,R.D.,et al, 1990