@article{ref1,
title="Sleep disorders of cabin crew following transmeridian long-distance flights",
journal="Medizinische Klinik [Urban und Schwarzenberg]",
year="1976",
author="Schaffler, K. and Renemann, H. H.",
volume="71",
number="46",
pages="1985-1995",
abstract="<p>[Abstract unavailable]</p><p>Language: de</p>",
language="de",
issn="0025-8458",
doi="",
url="http://dx.doi.org/"
}