@article{ref1,
title="Differentiation of headache following accidents",
journal="MMW: Munchener Medizinische Wochenschrift",
year="1977",
author="Scherzer, E.",
volume="119",
number="14",
pages="468-468",
abstract="<p>[Abstract unavailable]</p><p>Language: de</p>",
language="de",
issn="0341-3098",
doi="",
url="http://dx.doi.org/"
}