@article{ref1,
title="Bioterrorism or natural disasters: what shall we worry about next?",
journal="Croatian medical journal",
year="2007",
author="Calisher, Charles H.",
volume="48",
number="4",
pages="574-578",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="0353-9504",
doi="",
url="http://dx.doi.org/"
}