@article{ref1,
title="Acute toxicity of radon",
journal="AMA archives of industrial health",
year="1955",
author="Morken, D. A.",
volume="12",
number="4",
pages="435-438",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="0567-3933",
doi="",
url="http://dx.doi.org/"
}