@article{ref1,
title="Mouth protectors for athletes",
journal="The Journal of the Nebraska Dental Association",
year="1972",
author="Merchant, E. S.",
volume="49",
number="1",
pages="15-17",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0028-1832",
doi="",
url="http://dx.doi.org/"
}