@article{ref1,
title="Short term memory systems in human information processing",
journal="Acta psychologica",
year="1967",
author="Posner, M. I.",
volume="27",
number="",
pages="267-284",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0001-6918",
doi="",
url="http://dx.doi.org/"
}