@article{ref1,
title="Sleep disorders in neurologic diseases",
journal="Landarzt",
year="1967",
author="Wolf, G.",
volume="43",
number="13",
pages="593-599",
abstract="<p>[Abstract unavailable]</p><p>Language: de</p>",
language="de",
issn="0023-7728",
doi="",
url="http://dx.doi.org/"
}