Case Record of MGH
Medulloblastoma Metastasizing to Subarachnoid Space, NEJM 295:5531976., , 1976
Acquired Lesions of the Fourth Cranial Nerve
Brain 93:567, Berger,J.,et al, 1970
Isolated Superior Oblique Palsies with Brainstem Lesions
Neurol 53:1126-1127, Thomke,F.&Ringel,K., 1999