@article{ref1,
title="Acute head injury; a review of one thousand cases",
journal="American surgeon",
year="1953",
author="Ulin, A. W. and Rosomoff, H. L. and Berkowitz, D. and Olsen, A. K.",
volume="19",
number="3",
pages="226-236",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="0003-1348",
doi="",
url="http://dx.doi.org/"
}