@article{ref1,
title="The concentration of lead in automobile exhaust exposure chambers",
journal="American Industrial Hygiene Association journal",
year="1972",
author="Barkley, N. P. and Busch, K. A. and Crider, W. L. and Malanchuk, M.",
volume="33",
number="10",
pages="678-683",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0002-8894",
doi="",
url="http://dx.doi.org/"
}