@article{ref1,
title="A Personal Note on Normal Accidents",
journal="Organization and environment",
year="2004",
author="Perrow, Charles",
volume="17",
number="1",
pages="9-14",
abstract="<p>[Abstract unavailable]</p>",
language="",
issn="1086-0266",
doi="10.1177/1086026603262028",
url="http://dx.doi.org/10.1177/1086026603262028"
}