@article{ref1,
title="The problems of industrial accident insurance",
journal="California state journal of medicine",
year="1922",
author="Parkinson, J. H.",
volume="20",
number="7",
pages="222-224",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="0093-402X",
doi="",
url="http://dx.doi.org/"
}