@article{ref1,
title="The Road Sign",
journal="Deutsche Medizinische Wochenschrift",
year="1935",
author="Schifferer, FA and Hesse, W",
volume="79",
number="",
pages="723-726",
abstract="<p>[Abstract unavailable]</p>",
language="",
issn="0012-0472",
doi="",
url="http://dx.doi.org/"
}