@article{ref1,
title="Medical Problems of Wearing Coalminers Safety Helmet",
journal="British journal of industrial medicine",
year="1964",
author="Fernandez, RHP",
volume="21",
number="2",
pages="158-158",
abstract="[Abstract unavailable]  <p>Language: en</p>",
language="en",
issn="0007-1072",
doi="",
url="http://dx.doi.org/"
}