@article{ref1,
title="The effect of local target surround and whole background constraint on visual search times",
journal="Human factors",
year="1975",
author="Monk, T. H. and Brown, Ben",
volume="17",
number="1",
pages="81-88",
abstract="Abstract unavailable.",
language="",
issn="0018-7208",
doi="",
url="http://dx.doi.org/"
}