@article{ref1,
title="A study of carboxyhaemoglobin levels in employees at an integrated steelworks",
journal="Annals of occupational hygiene",
year="1962",
author="Jones, J. G. and Walters, D. H.",
volume="5",
number="",
pages="221-230",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0003-4878",
doi="",
url="http://dx.doi.org/"
}