@article{ref1,
title="The role of the bicycle in relation to the train",
journal="IATSS research",
year="1989",
author="Westra, TMGR",
volume="13",
number="2",
pages="23-31",
abstract="<p>[Abstract unavailable]</p>",
language="",
issn="0386-1112",
doi="",
url="http://dx.doi.org/"
}