@article{ref1,
title="Radiation accidents in North Rhine-Westphalia during years 1953-1969",
journal="Strahlenschutz in Forschung und Praxis",
year="1971",
author="Rahm, G.",
volume="11",
number="",
pages="109-124",
abstract="<p>[Abstract unavailable]</p><p>Language: de</p>",
language="de",
issn="0081-5888",
doi="",
url="http://dx.doi.org/"
}