Extracranial and Intracranial Vertebrobasilar Dissections:Diagnosis and Prognosis
JNNP 63:46-51, deBray,J.M.,et al, 1997
Evaluation of Extracranial Vertebral Artery Dissection with Duplex Color-Flow Imaging
Stroke 27:290-295, Bartels,E.&Flugel,K.A., 1996