@article{ref1,
title="The relation of fatigue to industrial accidents, I",
journal="American journal of sociology",
year="1911",
author="Bogardus, Emory S.",
volume="17",
number="2",
pages="206-222",
abstract="<p>[Abstract unavailable]</p>",
language="en",
issn="0002-9602",
doi="10.1086/211965",
url="http://dx.doi.org/10.1086/211965"
}