@article{ref1,
title="Evaluation of the dynamics of crash helmets. i. trials with a crash pendulum",
journal="Beitrage zur Gerichtlichen Medizin",
year="1984",
author="Richling, B. and Sorgo, G.",
volume="42",
number="",
pages="445-454",
abstract="Abstract unavailable.",
language="",
issn="0067-5016",
doi="",
url="http://dx.doi.org/"
}