@article{ref1,
title="Headaches prior to earthquakes",
journal="International journal of biometeorology",
year="1988",
author="Morton, L. L.",
volume="32",
number="2",
pages="147-148",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0020-7128",
doi="",
url="http://dx.doi.org/"
}