@article{ref1,
title="Protrusion of upper incisors and accidental injuries",
journal="Revista da Associação Paulista de Cirurgiões Dentistas",
year="1972",
author="Carvalho O de T, D. E.",
volume="26",
number="5",
pages="266-271",
abstract="<p>[Abstract unavailable]</p><p>Language: pt</p>",
language="pt",
issn="0004-5276",
doi="",
url="http://dx.doi.org/"
}