@article{ref1,
title="Nuclear free zones",
journal="American journal of public health",
year="1987",
author="Christoffel, Thomas H.",
volume="77",
number="7",
pages="869-873",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0090-0036",
doi="",
url="http://dx.doi.org/"
}