@article{ref1,
title="Intracranial sewing needles, an unusual cause of headaches",
journal="Zentralblatt fur Neurochirurgie",
year="1958",
author="Gerlach, J. and Jensen, H. P.",
volume="18",
number="2-3",
pages="127-135",
abstract="<p>[Abstract unavailable]</p><p>Language: de</p>",
language="de",
issn="0044-4251",
doi="",
url="http://dx.doi.org/"
}