@article{ref1,
title="Assessment of health hazards of electron-beam metal melting or welding units",
journal="Industrial medicine and surgery",
year="1969",
author="Voltkova, N. I. and Sizikova,  and Sobol, A. F.",
volume="38",
number="12",
pages="448-451",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0019-8536",
doi="",
url="http://dx.doi.org/"
}