@article{ref1,
title="The fracture of human enamel: a mechanical model",
journal="Archives of oral biology",
year="1970",
author="Tyldesley, W. R.",
volume="15",
number="10",
pages="997-999",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0003-9969",
doi="",
url="http://dx.doi.org/"
}