@article{ref1,
title="Two alternative definitions of traffic equilibrium",
journal="Transportation research part B: methodological",
year="1984",
author="Smith, M. J.",
volume="18",
number="1",
pages="63-65",
abstract="The paper shows that, under reasonable conditions, if there are junction or modal interactions then a Wardrop equilibrium exists but a user--optimised flow may well not.<p /><p>Language: en</p>",
language="en",
issn="0191-2615",
doi="10.1016/0191-2615(84)90006-7",
url="http://dx.doi.org/10.1016/0191-2615(84)90006-7"
}