@article{ref1,
title="Hearing protective devices",
journal="Ceskoslovenska Otolaryngologie",
year="1982",
author="Kiml, J.",
volume="31",
number="2",
pages="106-117",
abstract="<p>[Abstract unavailable]</p><p>Language: cs</p>",
language="cs",
issn="0009-0603",
doi="",
url="http://dx.doi.org/"
}