@article{ref1,
title="Violence in a psychiatric unit",
journal="Journal of Advanced Nursing",
year="1978",
author="Campbell, W. and Mawson, D.",
volume="3",
number="1",
pages="55-64",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="0309-2402",
doi="",
url="http://dx.doi.org/"
}