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2. Correlation between bony radiological signs and dolichoarterial loops of the cervical vertebral artery;Babin, E.; Haller, M.;Neuroradiology,1973
3. The anterior approach for removal of ruptured cervical discs;Cloward, R.B.;Journal of Neurosurgery,1958
4. The Spine. A Radiological Text and Atlas;Epstein, B.S.,1969
5. Cited by Penning, L;Exner, G.,1954