@article{ref1,
title="Special glasses",
journal="Boletin Asociacion Medica de Puerto Rico",
year="1975",
author="Miranda, M. N.",
volume="67",
number="4",
pages="81-90",
abstract="<p>[Abstract unavailable]</p><p>Language: es</p>",
language="es",
issn="0004-4849",
doi="",
url="http://dx.doi.org/"
}