@article{ref1,
title="Traffic accidents: a social-medical problem",
journal="Wiener Medizinische Wochenschrift",
year="1959",
author="Popper, L.",
volume="109",
number="",
pages="878-881",
abstract="Abstract unavailable.",
language="",
issn="0043-5341",
doi="",
url="http://dx.doi.org/"
}