@article{ref1,
title="International Drought Information-Center, University-Of-Nebraska",
journal="Disasters",
year="1991",
author="Wilhite, DA",
volume="15",
number="3",
pages="278-280",
abstract="<p>[Abstract unavailable]</p>",
language="",
issn="0361-3666",
doi="",
url="http://dx.doi.org/"
}