@article{ref1,
title="Modern roundabouts: a challenge of the future",
journal="Journal of advanced transportation",
year="2019",
author="Tollazzi, Tomaz and Mauro, Raffaele and Zilioniene, Daiva and Otković, Irena I. and Stamatiadis, Nikiforos",
volume="2019",
number="",
pages="e3950891-e3950891",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="0197-6729",
doi="10.1155/2019/3950891",
url="http://dx.doi.org/10.1155/2019/3950891"
}