@article{ref1,
title="The allocation of attention in multisource monitoring behaviour: adult age differences",
journal="Perception",
year="1973",
author="Sanford, A. J. and Maule, A. J.",
volume="2",
number="1",
pages="91-100",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0301-0066",
doi="",
url="http://dx.doi.org/"
}