@article{ref1,
title="Mouth support for aerialists",
journal="Deutsche Zahnarztliche Zeitschrift",
year="1954",
author="Immertreu, W.",
volume="9",
number="2",
pages="82-88",
abstract="<p>[Abstract unavailable]</p><p>Language: un</p>",
language="un",
issn="0012-1029",
doi="",
url="http://dx.doi.org/"
}