@article{ref1,
title="Unusual damage to a crawler tractor",
journal="Journal - Forensic Science Society",
year="1972",
author="Miller, N. A.",
volume="12",
number="2",
pages="351-354",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0015-7368",
doi="",
url="http://dx.doi.org/"
}