@article{ref1,
title="Multiple crashes on motor ways",
journal="British medical journal: BMJ",
year="1972",
author="Christian, M. S.",
volume="2",
number="5808",
pages="295-295",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0959-8138",
doi="",
url="http://dx.doi.org/"
}