@article{ref1,
title="Morningness-eveningness preferences and sleep-waking dairy data of morning and evening types in student and worker samples",
journal="Ergonomics",
year="1983",
author="Mecacci, Luciano and Zani, A.",
volume="26",
number="12",
pages="1147-1153",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="0014-0139",
doi="",
url="http://dx.doi.org/"
}