@article{ref1,
title="Fatigue and hours of service of interstate truck drivers (IV): Critical fusion frequency of flicker",
journal="Public health bulletin (Washington, DC)",
year="1941",
author="Lee, R. H.",
volume="",
number="265",
pages="195-208",
abstract="<p>[Abstract unavailable]</p>",
language="",
issn="1048-6348",
doi="",
url="http://dx.doi.org/"
}