@article{ref1,
title="Plant insurance and health and safety at work",
journal="Journal of occupational accidents",
year="1978",
author="Butler, J. and Ball, DF and Pearson, A. W.",
volume="1",
number="4",
pages="297-309",
abstract="<p>[Abstract unavailable]</p>",
language="",
issn="0376-6349",
doi="",
url="http://dx.doi.org/"
}