@article{ref1,
title="Bitumen burns in construction workers",
journal="Ortopediia travmatologiia i protezirovanie",
year="1965",
author="Klassen, G. Ia",
volume="26",
number="",
pages="46-49",
abstract="<p>[Abstract unavailable]</p><p>Language: ru</p>",
language="ru",
issn="0030-5987",
doi="",
url="http://dx.doi.org/"
}