@article{ref1,
title="Symposium: maxillofacial injury due to accident. Blow-out fracture",
journal="Keisei geka",
year="1970",
author="Ito, E. and Tajima, S.",
volume="13",
number="1",
pages="82-84",
abstract="<p>[Abstract unavailable]</p><p>Language: ja</p>",
language="ja",
issn="0021-5228",
doi="",
url="http://dx.doi.org/"
}