@article{ref1,
title="Accidents in coal mines",
journal="British medical journal: BMJ",
year="1964",
author="Thorne, N.",
volume="2",
number="5422",
pages="1411-1412",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="0959-8138",
doi="",
url="http://dx.doi.org/"
}