@article{ref1,
title="A study on hip injuries",
journal="Revista de Enfermeria",
year="1989",
author="Negral Lera, V. and González Santos, N.",
volume="12",
number="130",
pages="19-23",
abstract="<p>[Abstract unavailable]</p><p>Language: es</p>",
language="es",
issn="0210-5020",
doi="",
url="http://dx.doi.org/"
}