@article{ref1,
title="Human and Mechanical Error-an Unknown Quantity in Research",
journal="American behavioral scientist",
year="1967",
author="Sussman, M. B. and Haug, M. R.",
volume="11",
number="2",
pages="55-56",
abstract="<p>[Abstract unavailable]</p>",
language="",
issn="0002-7642",
doi="10.1177/000276426701100204",
url="http://dx.doi.org/10.1177/000276426701100204"
}