@article{ref1,
title="Severe accident caused by explosion in a quarry",
journal="Zentralblatt fur Arbeitsmedizin und Arbeitsschutz",
year="1955",
author="Bauer, G.",
volume="5",
number="5",
pages="159-160",
abstract="<p>[Abstract unavailable]</p><p>Language: de</p>",
language="de",
issn="0044-4049",
doi="",
url="http://dx.doi.org/"
}