@article{ref1,
title="Effect of noise on human sleep",
journal="Gigiena i Sanitariia",
year="1974",
author="Radulov, S. and Rolný, D.",
volume="",
number="6",
pages="82-84",
abstract="<p>[Abstract unavailable]</p><p>Language: ru</p>",
language="ru",
issn="0016-9900",
doi="",
url="http://dx.doi.org/"
}