@article{ref1,
title="Current problems of the theory of safe levels of chemicals",
journal="Gigiena Truda i Professional'nye Zabolevaniia",
year="1987",
author="Sanotskiĭ, I. V.",
volume="",
number="8",
pages="1-4",
abstract="<p>[Abstract unavailable]</p><p>Language: ru</p>",
language="ru",
issn="0016-9919",
doi="",
url="http://dx.doi.org/"
}