@article{ref1,
title="Frequency of concussion and type of criminality",
journal="Acta psychiatrica Scandinavica",
year="1971",
author="Lidberg, L.",
volume="47",
number="4",
pages="452-461",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0001-690X",
doi="",
url="http://dx.doi.org/"
}