@article{ref1,
title="Prevention of injuries to anterior teeth",
journal="International dental journal",
year="1974",
author="Wei, S. H.",
volume="24",
number="1",
pages="30-49",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0020-6539",
doi="",
url="http://dx.doi.org/"
}