@article{ref1,
title="Mouth protectors--an update",
journal="New Zealand dental journal",
year="1978",
author="Nicholas, N. K.",
volume="74",
number="336",
pages="72-74",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0028-8047",
doi="",
url="http://dx.doi.org/"
}