@article{ref1,
title="Accident in a manhole",
journal="Zeitschrift fur Unfallmedizin und Berufskrankheiten",
year="1959",
author="Wehrli, S.",
volume="52",
number="",
pages="264-270",
abstract="<p>[Abstract unavailable]</p> <p>Language: de</p>",
language="de",
issn="0044-3603",
doi="",
url="http://dx.doi.org/"
}