@article{ref1,
title="Loss of consciousness and cerebral concussion",
journal="Sistema Nervoso",
year="1950",
author="Sacchi, U.",
volume="2",
number="6",
pages="462-481",
abstract="<p>[Abstract unavailable]</p><p>Language: un</p>",
language="un",
issn="0049-0636",
doi="",
url="http://dx.doi.org/"
}