@article{ref1,
title="The relative importance of contrast and motion in visual detection",
journal="Human factors",
year="1972",
author="Dugas, D. J. and Petersen, H. E.",
volume="14",
number="3",
pages="207-216",
abstract="Abstract unavailable.",
language="",
issn="0018-7208",
doi="",
url="http://dx.doi.org/"
}