@article{ref1,
title="Early reports of x-ray dangers",
journal="Bulletin of the history of dentistry",
year="1974",
author="Maxxola, P. V.",
volume="22",
number="1",
pages="31-34",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0007-5132",
doi="",
url="http://dx.doi.org/"
}