@article{ref1,
title="The spirit of occupational medicine",
journal="British medical journal: BMJ",
year="1979",
author="Black, D.",
volume="2",
number="6205",
pages="1622-1626",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0959-8138",
doi="",
url="http://dx.doi.org/"
}