@article{ref1,
title="Radiography of compressed air workers using optimum kilovoltage",
journal="Radiologic technology",
year="1971",
author="Carlstein, C. J.",
volume="43",
number="1",
pages="10-14",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0033-8397",
doi="",
url="http://dx.doi.org/"
}