@article{ref1,
title="Psychomotor efficiency in children of low socioeconomic status, during their 2d year of life",
journal="Revista Chilena de pediatría",
year="1979",
author="Lira, M. I. and Rodriguez, S.",
volume="50",
number="3",
pages="35-41",
abstract="<p>[Abstract unavailable]</p><p>Language: es</p>",
language="es",
issn="0370-4106",
doi="",
url="http://dx.doi.org/"
}