@article{ref1,
title="Occupational injuries in road quarries",
journal="Medycyna pracy",
year="1965",
author="Sawicz-Birkowska, K.",
volume="16",
number="3",
pages="235-241",
abstract="<p>[Abstract unavailable]</p><p>Language: pl</p>",
language="pl",
issn="0465-5893",
doi="",
url="http://dx.doi.org/"
}