@article{ref1,
title="Teeth impacted by trauma",
journal="Dental digest",
year="1972",
author="Elfenbaum, A.",
volume="78",
number="3",
pages="140-141",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0011-8567",
doi="",
url="http://dx.doi.org/"
}