@article{ref1,
title="Measurement by observations of aggressive behaviour and activities in clinical situations",
journal="Criminal behaviour and mental health",
year="1994",
author="Bech, Per",
volume="4",
number="4",
pages="290-302",
abstract="[Abstract unavailable]  <p>Language: en</p>",
language="en",
issn="0957-9664",
doi="",
url="http://dx.doi.org/"
}