@article{ref1,
title="Considerations on accidents in mines in 1952",
journal="Pracovni Lekarstvi",
year="1953",
author="Zemlicka, V.",
volume="5",
number="5",
pages="274-277",
abstract="<p>[Abstract unavailable]</p><p>Language: un</p>",
language="un",
issn="0032-6291",
doi="",
url="http://dx.doi.org/"
}