@article{ref1,
title="Juvenile delinquency 16 years before the 21st century",
journal="Boletin Asociacion Medica de Puerto Rico",
year="1985",
author="Guevara de Ramos, L. M.",
volume="77",
number="1",
pages="15-18",
abstract="<p>[Abstract unavailable]</p><p>Language: es</p>",
language="es",
issn="0004-4849",
doi="",
url="http://dx.doi.org/"
}