@article{ref1,
title="Effectiveness of individual noise protection of the ears and cerebral vessels",
journal="Gigiena Truda i Professional'nye Zabolevaniia",
year="1981",
author="Ryzhov, A. Ia and Shkarinov, L. N.",
volume=" ",
number="2",
pages="40-41",
abstract="<p>[Abstract unavailable]</p><p>Language: ru</p>",
language="ru",
issn="0016-9919",
doi="",
url="http://dx.doi.org/"
}