@article{ref1,
title="Premonitory falls",
journal="Practitioner",
year="1971",
author="Howell, T. H.",
volume="206",
number="235",
pages="666-667",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0032-6518",
doi="",
url="http://dx.doi.org/"
}