Acute Spinal Subdural Hematoma:MR and CT Findings with Pathologic Correlates
AJNR 15:1895-1905, Donovan Post,M.J.,et al, 1994
Diagnosis and Treatment of Ossification of the Posterior Longitudinal Ligament of the Spine:8 Cases and Lit Review
Am J Med 92:296-306, Trojan,D.A.,et al, 1992