@article{ref1,
title="Multiple Task Performance: Operator Overload",
journal="Occupational psychology",
year="1971",
author="Rolfe, J. M.",
volume="45",
number="2",
pages="125-132",
abstract="[Abstract unavailable]  <p>Language: en</p>",
language="en",
issn="0029-7976",
doi="",
url="http://dx.doi.org/"
}