@article{ref1,
title="Current status of laser threshold guides",
journal="American Industrial Hygiene Association journal",
year="1970",
author="Powell, C. H. and Bell, H. E. and Rose, V. E. and Goldman, L. and Wilkinson, T. K.",
volume="31",
number="4",
pages="485-491",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0002-8894",
doi="",
url="http://dx.doi.org/"
}