@article{ref1,
title="Pedestrian skywalk systems: Downtown great hope or pathways to ruin?",
journal="Transportation quarterly",
year="1988",
author="Robertson, KA",
volume="42",
number="3",
pages="457-484",
abstract="[Abstract unavailable]  <p>Language: en</p>",
language="en",
issn="0278-9434",
doi="",
url="http://dx.doi.org/"
}