@article{ref1,
title="Response selection in keeping track of several things at once",
journal="Acta psychologica",
year="1967",
author="Yntema, D. B. and Schulman, G. M.",
volume="27",
number="",
pages="325-332",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0001-6918",
doi="",
url="http://dx.doi.org/"
}