@article{ref1,
title="The hazard to the dentist and his staff from dental radiology",
journal="Dental practitioner and dental record",
year="1972",
author="Smith, N. J.",
volume="22",
number="11",
pages="409-413",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0011-8729",
doi="",
url="http://dx.doi.org/"
}