@article{ref1,
title="Use of danger analysis in the projection stage",
journal="Zeitschrift fur die Gesamte Hygiene und Ihre Grenzgebiete",
year="1988",
author="Lang, R.",
volume="34",
number="2",
pages="159-161",
abstract="<p>[Abstract unavailable]</p><p>Language: de</p>",
language="de",
issn="0049-8610",
doi="",
url="http://dx.doi.org/"
}