@inbook{124847,
author={David T. Schwartz},
title={Chapter V-2. Type III Odontoid Fracture—the "Ring of C2"},
booktitle={Emergency Radiology: Case Studies},
publisher={The McGraw-Hill Companies},
address={New York, NY},
year={2008},
url={accessemergencymedicine.mhmedical.com/content.aspx?aid=124847}
}