@article{ref1,
title="Maintenance of Cars",
journal="OR: Operational research quarterly (1953)",
year="1954",
author="",
volume="5",
number="4",
pages="132-132",
abstract="<p>[Abstract unavailable]</p>",
language="",
issn="1473-2858",
doi="",
url="http://dx.doi.org/"
}