@article{ref1,
title="Short-term retention of visually presented stimuli: some evidence of visual encoding",
journal="Acta psychologica",
year="1976",
author="Nickerson, R. S.",
volume="40",
number="2",
pages="153-162",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0001-6918",
doi="",
url="http://dx.doi.org/"
}