@article{ref1,
title="Cases of acute poisoning due to sewage gases",
journal="Gigiena Truda i Professional'nye Zabolevaniia",
year="1969",
author="Iunusova, Kh K. and Khanafeeva, S. K.",
volume="13",
number="10",
pages="46-47",
abstract="<p>[Abstract unavailable]</p><p>Language: ru</p>",
language="ru",
issn="0016-9919",
doi="",
url="http://dx.doi.org/"
}