@article{ref1,
title="On the fluid mechanics of human crowd motion",
journal="Transportation research",
year="1974",
author="Henderson, L.F.",
volume="8",
number="6",
pages="509-515",
abstract="The paper presents a theory of the flow of people along a channel which may be of variable width, or have a partial blockage in it. The results are presented in kinetic form to facilitate comparison with observation. It is shown that a crowd fluid may exhibit anomolous gas dynamic behaviour caused by a change in the sign of a well known derivative. This indicates that expansion shocks are possible in crowd fluids.<p />",
language="",
issn="0041-1647",
doi="10.1016/0041-1647(74)90027-6",
url="http://dx.doi.org/10.1016/0041-1647(74)90027-6"
}