@article{ref1,
title="Illinois concealed carry law mandates a safety sign",
journal="Occupational health and safety",
year="2013",
author="",
volume="82",
number="12",
pages="16-16",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0362-4064",
doi="",
url="http://dx.doi.org/"
}