@article{ref1,
title="Clinical observations on the spines of ejected pilots",
journal="Industrial medicine and surgery",
year="1963",
author="Hirsch, C. and Nachemsson, A.",
volume="32",
number="",
pages="28-29",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0019-8536",
doi="",
url="http://dx.doi.org/"
}