@article{ref1,
title="Changes in Law as Leverage Points for Policy Research",
journal="American behavioral scientist",
year="1987",
author="Leviton, L. C.",
volume="30",
number="6",
pages="632-643",
abstract="<p>[Abstract unavailable]</p>",
language="",
issn="0002-7642",
doi="10.1177/000276487030006007",
url="http://dx.doi.org/10.1177/000276487030006007"
}