@article{ref1,
title="Unemployment and criminal involvement: an investigation of reciprocal causal structures",
journal="American sociological review",
year="1984",
author="Thornberry, T. P. and Christenson, R. L.",
volume="49",
number="3",
pages="398-411",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="0003-1224",
doi="",
url="http://dx.doi.org/"
}