@article{ref1,
title="Automatic pushing doors in shops",
journal="Ugeskrift for Laeger",
year="1984",
author="Gravesen, J. J.",
volume="146",
number="25",
pages="1892-1892",
abstract="<p>[Abstract unavailable]</p> <p>Language: da</p>",
language="da",
issn="0041-5782",
doi="",
url="http://dx.doi.org/"
}