@article{ref1,
title="Mouth protectors for contact sports",
journal="Dental digest",
year="1951",
author="Cathcart, J. F.",
volume="57",
number="8",
pages="346-348",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0011-8567",
doi="",
url="http://dx.doi.org/"
}