@article{ref1,
title="Evaluating safety in the management of maintenance activities in the chemical process industry",
journal="Safety science",
year="1998",
author="Hale, Andrew Richard and Heming, BHJ and Smit, K and Rodenburg, FGT and van Leeuwen, ND",
volume="28",
number="1",
pages="21-44",
abstract="<p>[Abstract unavailable]</p>",
language="en",
issn="0925-7535",
doi="",
url="http://dx.doi.org/"
}