@article{ref1,
title="Crowding on yosemite buses",
journal="Science",
year="1975",
author="Wicker, A. W.",
volume="189",
number="4197",
pages="88-88",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0036-8075",
doi="10.1126/science.189.4197.88",
url="http://dx.doi.org/10.1126/science.189.4197.88"
}