@article{ref1,
title="Travel intensity in a city with a barrier",
journal="Transportation research part B: methodological",
year="1981",
author="Pearce, C. E. M.",
volume="15",
number="6",
pages="427-435",
abstract="An analytical study is made of the determination of the travel intensity at an arbitrary point of a city with a straight line barrier. For a given origin and destination a trip is made by the shortest path not crossing the barrier or the city perimeter. The joint trip end distribution is arbitrary except for a continuity assumption.<p /><p>Language: en</p>",
language="en",
issn="0191-2615",
doi="10.1016/0191-2615(81)90027-8",
url="http://dx.doi.org/10.1016/0191-2615(81)90027-8"
}