@article{ref1,
title="Assessing the difficulty of the labor of workers occupied in hot metal shaping",
journal="Gigiena Truda i Professional'nye Zabolevaniia",
year="1976",
author="Koshenkov, V. N.",
volume="",
number="4",
pages="5-9",
abstract="<p>[Abstract unavailable]</p><p>Language: ru</p>",
language="ru",
issn="0016-9919",
doi="",
url="http://dx.doi.org/"
}