@article{ref1,
title="Criminal behavior and age: A test of three provocative hypotheses",
journal="Journal of criminal law and criminology",
year="1997",
author="Tittle, C. R. and Grasmick, Harold G.",
volume="88",
number="1",
pages="309-342",
abstract="<p>[Abstract unavailable]</p>",
language="",
issn="0091-4169",
doi="",
url="http://dx.doi.org/"
}