@article{ref1,
title="A Study of Adult Probation Violation Rates by Means of the Cohort Approach",
journal="Journal of criminal law, criminology and police science",
year="1964",
author="Davis, GF",
volume="55",
number="1",
pages="70-85",
abstract="[Abstract unavailable]  <p>Language: en</p>",
language="en",
issn="0022-0205",
doi="",
url="http://dx.doi.org/"
}