1. Abel, M.S.: Occult traumatic lesions of the cervical vertebrae. Crit. Rev. Clin. Radiol. Nucl. Med. 6, 469 (1975)
2. Becker, R.F., Wilson, J.W., Gehweller, J.A.: The Anatomical Basis of Medical Practice, pp. 322–369 Baltimore: Williams and Wilkins 1971
3. Boni, R.: Spora un raro caso di frattura del tubercolo anteriore dell'atlante. Radiol. med. 43, 455 (1957)
4. Budin, E., Sondheimer, F.: Lateral spread of the atlas without fracture. Radiology 87, 1095 (1966)
5. Geipel, P.: Zur Kenntnis der Spaltbildung des Atlas und Epistropheus, Teil III. Fortschr. Röntgenstr. 52, 533 (1935)