@article{ref1,
title="Perception of signals presented in the periphery of the visual field",
journal="Acta psychologica",
year="1984",
author="Houtmans, M. J. and Sanders, A. F.",
volume="55",
number="2",
pages="143-155",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0001-6918",
doi="",
url="http://dx.doi.org/"
}