@article{ref1,
title="European transport: challenges and opportunities for future research and policies",
journal="Journal of transport geography",
year="1997",
author="Nijkamp, Peter and van Geenhuizen, Marina",
volume="5",
number="1",
pages="4-11",
abstract="<p>[Abstract unavailable]</p>",
language="",
issn="0966-6923",
doi="10.1016/S0966-6923(96)00041-5",
url="http://dx.doi.org/10.1016/S0966-6923(96)00041-5"
}