@article{ref1,
title="Painting of teeth black in Asia",
journal="Tandlaegebladet",
year="1982",
author="Pindborg, J. J.",
volume="86",
number="7",
pages="235-236",
abstract="<p>[Abstract unavailable]</p><p>Language: da</p>",
language="da",
issn="0039-9353",
doi="",
url="http://dx.doi.org/"
}