@article{ref1,
title="Physiologic and hygienic characteristics of some perforators used in mining industry",
journal="Gigiena Truda i Professional'nye Zabolevaniia",
year="1964",
author="Paranko, N. M.",
volume="19",
number="",
pages="52-53",
abstract="<p>[Abstract unavailable]</p><p>Language: ru</p>",
language="ru",
issn="0016-9919",
doi="",
url="http://dx.doi.org/"
}