@article{ref1,
title="Kaboom! A comet collides with Jupiter. Could an asteroid wipe out the earth?",
journal="Emergency medical services",
year="1995",
author="",
volume="24",
number="3",
pages="21-22",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0094-6575",
doi="",
url="http://dx.doi.org/"
}