@article{ref1,
title="Specialization and Seriousness During Adult Criminal Careers",
journal="Journal of quantitative criminology",
year="1988",
author="Blumstein, Alfred and Cohen, Jacqueline and Das, Somnath and Moitra, Soumyo D.",
volume="4",
number="4",
pages="303-345",
abstract="<p>[Abstract unavailable]</p>",
language="",
issn="0748-4518",
doi="",
url="http://dx.doi.org/"
}