@article{ref1,
title="Effects of Road User Characteristics and Vehicle Type on Road Roughness Perception",
journal="Road and transport research",
year="1994",
author="Loizas, A and Galias, J and Kanellaidis, George and Kondou, M",
volume="3",
number="4",
pages="56-",
abstract="[Abstract unavailable]  <p>Language: en</p>",
language="en",
issn="1037-5783",
doi="",
url="http://dx.doi.org/"
}