@article{ref1,
title="Impact theory under fire once more",
journal="Nature",
year="2009",
author="Dalton, Rex",
volume="461",
number="7266",
pages="861-861",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="0028-0836",
doi="10.1038/461861a",
url="http://dx.doi.org/10.1038/461861a"
}