@article{ref1,
title="Traffic education",
journal="Boletin de la Oficina Sanitaria Panamericana",
year="1974",
author="Silva Martínez, M.",
volume="77",
number="1",
pages="31-39",
abstract="<p>[Abstract unavailable]</p><p>Language: es</p>",
language="es",
issn="0030-0632",
doi="",
url="http://dx.doi.org/"
}