@article{ref1,
title="Sedating effects of ethanol after a nap",
journal="Alcohol, drugs and driving",
year="1989",
author="Roehrs, T. and Zwyghuizen-Doorenbos, A. and Zwyghuizen, H and Roth, T.",
volume="5",
number="4",
pages="351-356",
abstract="<p>[Abstract unavailable]</p>",
language="en",
issn="0891-7086",
doi="",
url="http://dx.doi.org/"
}