@article{ref1,
title="X-ray evidence of mechanical trauma",
journal="Oral surgery, oral medicine, and oral pathology",
year="1959",
author="Manson-hing, L. R.",
volume="12",
number="",
pages="1215-1223",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0030-4220",
doi="",
url="http://dx.doi.org/"
}