@article{ref1,
title="Mental epidemiological study in industrial plants",
journal="Activitas nervosa superior",
year="1964",
author="Bily, D.",
volume="6",
number="",
pages="409-409",
abstract="<p>[Abstract unavailable]</p> <p>Language: cs</p>",
language="cs",
issn="0001-7604",
doi="",
url="http://dx.doi.org/"
}