@article{ref1,
title="A Theory of Freedom of Expression",
journal="Philosophy and public affairs",
year="1972",
author="Scanlon, Thomas",
volume="1",
number="2",
pages="204-226",
abstract="Compelled wearing of motorcycle helmets is included among the discussions.<p />",
language="",
issn="0048-3915",
doi="",
url="http://dx.doi.org/"
}