@article{ref1,
title="Bicycle design: an illustrated history",
journal="Technology and culture",
year="2015",
author="Epperson, Bruce",
volume="56",
number="4",
pages="983-984",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0040-165X",
doi="",
url="http://dx.doi.org/"
}