@article{ref1,
title="Legal advice about acts already committed",
journal="International review of law and economics",
year="1990",
author="Kaplow, Louis and Shavell, Steven",
volume="10",
number="2",
pages="149-159",
abstract="<p>[Abstract unavailable]</p>",
language="",
issn="0144-8188",
doi="10.1016/0144-8188(90)90020-T",
url="http://dx.doi.org/10.1016/0144-8188(90)90020-T"
}