@article{ref1,
title="The basis of equations proposed for calculating indices of toxicity, maximum permissible concentration, safety coefficients, etc",
journal="Gigiena i Sanitariia",
year="1974",
author="Liublina, E. I. and Mikheev, M. I.",
volume="",
number="12",
pages="77-80",
abstract="<p>[Abstract unavailable]</p><p>Language: ru</p>",
language="ru",
issn="0016-9900",
doi="",
url="http://dx.doi.org/"
}