@inproceedings{
NecDeS:03-014,
author={I. Necoara and B. {D}e Schutter and H. Hellendoorn},
title={On structural properties of {Helbing}'s gas-kinetic traffic flow
model},
booktitle={Proceedings of the 2004 American Control Conference},
address={Boston, Massachusetts},
pages={5508--5513},
month=jun # {--} # jul,
year={2004}
}