@article{ref1,
title="On the problem of noxious gases in railway tunnels of the Czechoslovakian State Railroad",
journal="Pracovni Lekarstvi",
year="1965",
author="Nĕmecek, J.",
volume="17",
number="8",
pages="357-360",
abstract="<p>[Abstract unavailable]</p><p>Language: cs</p>",
language="cs",
issn="0032-6291",
doi="",
url="http://dx.doi.org/"
}