@article{ref1,
title="Social Experiments",
journal="Milbank Memorial Fund quarterly: health and society",
year="1981",
author="Freeman, Howard E. and Rossi, Peter H.",
volume="59",
number="3",
pages="340-373",
abstract="<p>[Abstract unavailable]</p>",
language="",
issn="0160-1997",
doi="10.2307/3349684",
url="http://dx.doi.org/10.2307/3349684"
}