References
- Kuhn F. P., Furst G., Mödder U. Farbkodierte Duplex Sonographie. Aktuelle Radiol 1991; 1(4)153–8
- Louw J. A., Mafoyane N. A., Small B., Neser C. P. Occlusion of the vertebral artery in cervical spine dislocations. J Bone Joint Surg (Br) 1990; 72(4)679–81
- Stevens A. Functional Doppler sonography of the vertebral artery and some considerations about manual techniques. J Manual Med 1991; 6: 102–5