@article{ref1,
title="Toward measurement of attention as a function of risk and risk preference in man-machine systems",
journal="Human factors",
year="1975",
author="Robinson, G. H.",
volume="17",
number="3",
pages="236-242",
abstract="Abstract unavailable.",
language="",
issn="0018-7208",
doi="",
url="http://dx.doi.org/"
}