@article{ref1,
title="Adolescent sleepiness: Increased risk in a high-risk population",
journal="Alcohol, drugs and driving",
year="1989",
author="Carskadon, Mary A.",
volume="5",
number="4",
pages="317-328",
abstract="<p>[Abstract unavailable]</p>",
language="en",
issn="0891-7086",
doi="",
url="http://dx.doi.org/"
}