@article{ref1,
title="Managing violence in psychiatric hospitals",
journal="British medical journal: BMJ",
year="1991",
author="Schipperheijn, J. A. and Dunne, F. J.",
volume="303",
number="6794",
pages="71-72",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="0959-8138",
doi="",
url="http://dx.doi.org/"
}