@article{ref1,
title="Traffic safety from an economists point of view",
journal="Quarterly journal of economics",
year="1958",
author="Valavanis, S",
volume="72",
number="4",
pages="477-484",
abstract="[Abstract unavailable]  <p>Language: en</p>",
language="en",
issn="0033-5533",
doi="",
url="http://dx.doi.org/"
}