@article{ref1,
title="An analysis of causes of death in coal miners",
journal="Hua xi yi ke da xue xue bao",
year="1986",
author="Wang, M. Z. and Wang, Z. M.",
volume="17",
number="2",
pages="132-134",
abstract="<p>[Abstract unavailable]</p> <p>Language: zh</p>",
language="zh",
issn="0257-7712",
doi="",
url="http://dx.doi.org/"
}