@article{ref1,
title="Prior Regulation versus Post Liability: The Choice between Input and Output Monitoring",
journal="Journal of legal studies (Chicago)",
year="1977",
author="Wittman, Donald",
volume="6",
number="1",
pages="193-211",
abstract="<p>[Abstract unavailable]</p>",
language="",
issn="0047-2530",
doi="",
url="http://dx.doi.org/"
}