@article{ref1,
title="Negligence in road traffic, cerebral insufficiency and sociological factors in old age",
journal="Deutsches Medizinisches Journal",
year="1964",
author="Zirner, F. and Wissel, M.",
volume="15",
number="",
pages="778-784",
abstract="Abstract unavailable.",
language="",
issn="0012-1320",
doi="",
url="http://dx.doi.org/"
}