@article{ref1,
title="Violence in psychiatric patients",
journal="Nursing times",
year="1972",
author="Frost, M.",
volume="68",
number="24",
pages="748-749",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="0954-7762",
doi="",
url="http://dx.doi.org/"
}