@article{ref1,
title="Factors precipitating fan violence: a comparison of professional soccer in Britain and North America",
journal="British journal of sociology",
year="1980",
author="Roadburg, A.",
volume="31",
number="2",
pages="265-276",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0007-1315",
doi="",
url="http://dx.doi.org/"
}