@article{ref1,
title="Accidents at work",
journal="British medical journal: BMJ",
year="1971",
author="",
volume="3",
number="5777",
pages="722-723",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="0959-8138",
doi="",
url="http://dx.doi.org/"
}