@article{ref1,
title="Level of Service on Pedestrian Facilities",
journal="Transportation quarterly",
year="1985",
author="Seneviratne, PN and Morrall, John F.",
volume="39",
number="1",
pages="109-123",
abstract="[Abstract unavailable]  <p>Language: en</p>",
language="en",
issn="0278-9434",
doi="",
url="http://dx.doi.org/"
}