@article{ref1,
title="The conservation of matter",
journal="Annals of emergency medicine",
year="2002",
author="Drescher, Michael J.",
volume="39",
number="1",
pages="91-93",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0196-0644",
doi="",
url="http://dx.doi.org/"
}