@article{ref1,
title="Accident statistics of the safety authorities and their teachings",
journal="Wiener Medizinische Wochenschrift",
year="1959",
author="Graf, J.",
volume="109",
number="",
pages="865-867",
abstract="Abstract unavailable.",
language="",
issn="0043-5341",
doi="",
url="http://dx.doi.org/"
}