@article{ref1,
title="The value of trace evidence",
journal="New England journal of medicine",
year="1951",
author="Spelman, J. W.",
volume="244",
number="1",
pages="34-36",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0028-4793",
doi="",
url="http://dx.doi.org/"
}