@article{ref1,
title="All fall down",
journal="Scientific American",
year="1988",
author="Horgan, John",
volume="259",
number="3",
pages="32-32",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="0036-8733",
doi="",
url="http://dx.doi.org/"
}