@article{ref1,
title="A free labor approach to human trafficking",
journal="University of Pennsylvania law review",
year="2010",
author="Pope, James Gray",
volume="158",
number="6",
pages="1849-1875",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0041-9907",
doi="",
url="http://dx.doi.org/"
}