@article{ref1,
title="Flexion injuries of the cervical spine",
journal="Journal of bone and joint surgery: American volume",
year="1964",
author="Petrie, J. G.",
volume="46",
number="",
pages="1800-1806",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0021-9355",
doi="",
url="http://dx.doi.org/"
}