@article{ref1,
title="Radiations, natural and man-made",
journal="Proceedings, National Cancer Conference",
year="1960",
author="Upton, A. C.",
volume="4",
number="",
pages="153-160",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0077-3670",
doi="",
url="http://dx.doi.org/"
}