@article{ref1,
title="Police Intervention in Riots - the Role of Accountability and Group Norms - A Field Experiment",
journal="Journal of community and applied social psychology",
year="1991",
author="Williamson, TM and Rowe, Terri and Reicher, Stephen",
volume="1",
number="4",
pages="269-273",
abstract="[Abstract unavailable]  <p>Language: en</p>",
language="en",
issn="1052-9284",
doi="",
url="http://dx.doi.org/"
}