@article{ref1,
title="General theory on fractures. Mechanism of fracture",
journal="Zahnarztliche Praxis",
year="1973",
author="Steinhilber, W. and Schwenzer, W.",
volume="24",
number="5",
pages="119-120",
abstract="<p>[Abstract unavailable]</p><p>Language: de</p>",
language="de",
issn="0044-1651",
doi="",
url="http://dx.doi.org/"
}