@article{ref1,
title="On the road for a single and reliable objective assessment of sleepiness",
journal="Sleep",
year="2012",
author="Pizza, Fabio and Contardi, Sara and Baiardi, Simone and Mondini, Susanna and Cirignotta, Fabio",
volume="35",
number="10",
pages="1323-1323",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="0161-8105",
doi="10.5665/sleep.2104",
url="http://dx.doi.org/10.5665/sleep.2104"
}