@article{ref1,
title="Experimental changes in shift schedules--their effects on well-being",
journal="Ergonomics",
year="1978",
author="Akerstedt, Torbjörn and Torsvall, L.",
volume="21",
number="10",
pages="849-856",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="0014-0139",
doi="",
url="http://dx.doi.org/"
}