@article{ref1,
title="Effects of continuous work and sleep loss in the reduction and recovery of work efficiency",
journal="American Industrial Hygiene Association journal",
year="1974",
author="Morgan, B. B.",
volume="35",
number="1",
pages="13-20",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0002-8894",
doi="10.1080/0002889748507001",
url="http://dx.doi.org/10.1080/0002889748507001"
}