@article{ref1,
title="Overtime working and work accident",
journal="Zhonghua Lao Dong Wei Sheng Zhi Ye Bing Za Zhi",
year="2010",
author="Yang, Hai-ou and Zhang, Jun-quan and Dang, Wei-Min",
volume="28",
number="6",
pages="473-474",
abstract="<p>[Abstract unavailable]</p> <p>Language: zh</p>",
language="zh",
issn="1001-9391",
doi="",
url="http://dx.doi.org/"
}