@article{ref1,
title="Sequence data as evidence",
journal="Nature",
year="1993",
author="Holmes, E. C. and Brown, A. J. and Simmonds, P.",
volume="364",
number="6440",
pages="766-766",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0028-0836",
doi="10.1038/364766b0",
url="http://dx.doi.org/10.1038/364766b0"
}